3. I can't vote for the RNC because of the way they treated Ron Paul delegates.
4. I can't vote for Romney because there's no difference between DNC and RNC.
There are serious objections, and then there are statements like this one. Let's compare and contrast:
DNC: God and Israel were booed from the floor, and abortion was enshrined as a secular sacrament.
RNC: Not one single delegate for Ron Paul was prohibited from voting for their candidate, but they were also not given the run of the place as they were a small minority of the delegates.
Casting a vote which ensures the DNC will win this election seems to me to be allowing something which seems to be bigger than the internal bylaws of the RNC.