If you're seriously contemplating it, because life is suffering, know that it's not always like that. This too shall pass. There are good times too. My life now is something I could not have imagined achieving back when I was depressed and couldn't see any future for myself. Life is also randomly wonderful. I'm incredibly grateful to my past self for struggling on through, not ending it, and getting us to here. Here is good.
Of course, this too shall pass. Enjoying the good times in full is important, because they won't last. I hope I have the courage to face my next set of bad times with the same fortitude as my past self faced them.