Liberals disappoint me with their naive perspectives.
I'm assuming that's a joke. Nobody has a monopoly on truth. I've talked to plenty of perfectly intelligent liberals with well-reasoned politics. Two people who think differently can learn a lot from each other if they can reason about and articulate their beliefs and are willing to change the way they see the world.
Conservatives have gotten plenty of things wrong, and still do. The idea that religion and politics mix well. The idea that some groups are more equal than others. There are a lot of liberals that I hate, and a lot of liberal ideas that bother me, but it's conservatives that I find really upsetting. They publicly support discrimination under the guise of "morality", willful ignorance under the guise of christian "science", or simply spew pure nonsense. Any "sensible right wing realist" can sort out the nonsense from legitimate conservative ideals, but conservatism as a whole loses a lot of legitimacy with these buffoons in charge.
Maybe it's worse because I live in a very liberal state, but I worry that when I tell someone I'm conservative, they interpret that as "ignorant and backwards-thinking," when in reality, a sensible conservative and a sensible liberal will find that they have a lot in common.