I like this a lot too. ive had all those ssame feelings! its really good:)

It has wonderful lines that rhymed and match perfectly. not too long, not too short, just the right length to make the reader yearn for more. plus the subject, life, ive always liked poems about them. this is beautiful.

Awww.. this is a very interesting poem... I like that most lines started with "If I knew then" .. I actually feel like that should be the title! But "If I" is fine as well :)

Well done!