2015 UK elections- who to vote for?

Is anyone else struggling for who to vote for in 2015?

I feel like the three major parties are all the same: rich Etonian schoolboys who only want to take advantage of us and get rich. Labour and Conservative are very corrupt parties and they seem to treat the whole thing as a joke (i.e. Boris Johnson, some people find him funny, but with the country falling apart and people going without food or heating, I don't want to see a politician acting like a Big Brother contestant.)

Liberal Democrats aren't even worth talking about.

A lot of people are keen on UKIP, but I'm the child of immigrants (dad is from the Republic of Ireland originally, maternal grandfather was from the Caribbean) and pro-gay marriage, so I feel that they do not represent me.

Then there's the parties like the Green party, but I think that would be a wasted vote as they aren't going to get into power.

Anyone else as lost as me? Who are you voting for and why?