I've never thought of suicide so I'm not sure it's right or wrong but .........
All I can tell you is that don't expect too much out of life and you will do just fine .......
There are lots of others who share your experience but life is hard sometimes.
I'm almost in the same boat as you. I'm a very qualified professional ( I hope ;D ) and good with computers and servers. But my day job is totally different field. I used to be purchasing agent for a telecommunication company and currently the owner/operator of a small fast food place.
Then there are a few of my friends who needs my help for Linux to WinNT problems and they are teaching in technical school.
So go figure about life .....
But still, I"m happy where I am now.
Believe me, it's a whole lot better than being a homeless and nothing to eat.
The most valuable things in life are that you didn't get easily.