I say yes. I am bisexual, and see no reason to say otherwise.
Should same sex marriage be legal?
If something is not legal or illegal, it means mostly, that it's thought to be wrong. So, you are not Free (supposed) to do it. And most people kind of condemn it.
We have:
Freedom of Speech (say what we want)
Freedom of Religion (believe what we want)
BUT
Freedom of Sex is still not accepted
If even priests and nuns do it, one need not be a genius to know that many, many do it. And the funny, or rather hypocritical part is, that they are the ones teaching us it's bad. Teachers should live by example proves to be valuable.
So, people condemn what they like to do. Those must be all hypocritical masochists. So not healthy to condemn yourself (and others)