Is sex serious?

Personally I don't think so. Let me elaborate. Sex is a part of life. When you start to take it seriously, I think you're in trouble. Sex should be fun. Sex should be a good thing between consenting adults.

Fun in bed? Absolutely. Not meaning necessarily laughing all the way to the orgasm, but exploring, feeling, touching, finding out what is good for your partner. As well as for yourself.

Chastity? Not for me :)