Bisexual stereotypes

I feel like some people (not anyone on here) that are lesbian/gay stereotype bisexuals as being cheaters just because they are attracted to both genders. They think down the road the girl will (eventually) leave them for a man to start a family with.I've chatted with a lot of lesbians that said that they wouldn't never date a bisexual girl and as went as far add hating them. I find them to be no different than anyone else. I just think it's wrong to have that view, but I guess it's whatever your fancy? Your thoughts? Opinions?