To update this thread, those men that told me how I'm going to have a hard finding someone are WRONG. I don't understand why some people just spew stuff with no evidence. While I was explaining bisexuality to them, they told me that "maybe you're single, because you're crazy." I even showed them actual evidence of couples being married, but they just didn't want to hear it.
Again, the person I'm dating now is okay about me being attracted to both genders. He asked me to be his girlfriend after I told him this. Interestingly, this guy is also my age (in his 30's). All of the guys I meet my age don't seem to care about bisexuality.
For the record, this forum where this conversation occurred is loveshack.org. I wouldn't recommend that place. It's very negative and misinformed. Most people that I meet in real life luckily don't talk like that.