I am a Christian and evangelical. I know there are diverse opinions among christians regarding masterbation, but as wise pastor once pointed out, there are major problems trying to base one's theology on some obscure passage about the seed of Onan which appears to be a reference to a man's unwillingness to fulfill his duties

You are God's creation and you are wonderfully made. That includes your sexuality as well. I am coming more and more that sex is God's gift to us and it is for us to enjoy as well as to reproduce. The problem seems to be when we corrupt God's gifts in destructive ways that harm us and other people

Personally I see nothing wrong with it. Most churches these days that I know these days do not seem to have a problem. (I cannot speak for all obviously) It is a way to fulfill a God given need without having to resort to risky and destructive behavior. Ultimately I am beginning to discover that in God's grand design it could actually be a way to help us appreciate the wonderful design that God has made when he created us male and female