There was one part of your post that really struck my mind, since I find it to be true. The rest, I think, points out that you are worried that once
you are dead your individual ego and self will vanish. That is not the case, not entirely at least.
Individual consciousness is what makes us have different unique experiences, as you said. Thing is that before this division, there was just one
consciousness, that of the infinite or God if you will. When your individual consciousness will merge with the other ones (merge in energies) then we
will all get back to that one infinite consciousness. Everything is a cycle and this repeats itself accordingly.
What you suggest is to escape this cycle by not dieing. Actually that would delay your personal progress towards oneness. What you are now, will not
die, it will be remembered and can be experienced at any time by anyone with enough awareness, even your future self. So you don't really die per
say, you just change. You won't change into a cat or dog since that would not make sense in the progression level. You can't be in one life a cat
and in the other a human, there is a slow gradual progress and evolution. So don't worry about turning into a warm next time you come to Earth.
I do not know what you think about souls or spirits. I for one think they exist in every living thing at different levels of progress and awareness.
Animals such as insects, cats, dogs, have a community (group) consciousness, we humans are a step higher in the individual consciousness. Thing is
that if we advance enough we will get back to a group consciousness which will actually become just one consciousness, aka God.
You should not try to escape death since that is an important part of you progress and life, when you will advance far enough as a soul your time on
Earth and on different realms of experience will increase, you might start living hundreds if not thousands of years on Earth, because your level of
awareness will permit you to do that. Right now we are very low in that level.
Actually when you will advance far enough, you will no longer need to incarnate and you will live a constant never-ending life, but still you will
change and progress.
I can understand your fear of losing your own self or ego. I sometimes felt the same. But you see life is not meant to keep things the same, life will
change you, you are not the same as 10 years ago. The same applies when talking about souls and different incarnations, these are layers in your
progress and continuous change. If your soul lived lets say 100 different lives, these together create your soul character, but you still have the 100
personalities you once lived. Nothing is lost actually. Every memory, thought, action you ever did is stored in the universal consciousness.
It is normal then to see why towards the end of our evolution we will merge and create just one consciousness. When you grow big enough you will gain
enough experience and awareness to fell connected with all that is and all that was experienced. This connection unites us and in the end creates just
one total and infinite being. But since it is infinite, there is space for more, hence a new division and a new cycle of lives.
You should not try to avoid death or be scare of it. At our level of awareness this is a necessary event, but this is debatable. Since your progress
would increase dramatically if life was not cut in pieces of ~70 years. A life of lets say 700 years is much more desirable than 10 lives of 70. But
as you can imagine, people living for 700 years on Earth would result in dramatical changes in our society and way of living, which is not desirable
by the forces which control Earth and us.
Aliens do exist, God does exist, we are just one tiny part of the whole. Some say we ourselves are aliens for this Earth. You should not be scared of
change, people on Earth search for security and stability, but those two things will slow your progress and learning experience greatly. So this is
why life has always found a way to complicate things and make all your "stability" and "security" vanish. Here is a quotation for this: "When you
start to understand life (feel secure and have stability in life) then life changes (new opportunities, experiences)." When I talk about new
experiences, these can be both good and bad. But at a high level of awareness we will understand that good and bad are just different
visions/understandings/layers of the same thing.
God is not good or bad, that is a misunderstanding. God is both and by uniting them he is above them. So you see there is purpose in every evil or
good act that happens which together help create a higher purpose.
You should not fear death or any event in your life, welcome them all as a new experience towards your own progress and evolution. But I must admit
that it is rather hard while living on Earth since you feel so disconnected from everything. But you are never alone no matter what, even when dieing.
Feel free to ask anything that might puzzle you. I hope I can help.