The republican party doesn't need to be "reformed". There's always been a liberal membership in the Republican party. A little research shows that they're called "Rockefeller" republicans
. It is a sad twist of events, probably due in part to the corruption of the Nixon administration, that ever since the 1980 election conservatives have dominated the GOP.
The official democratic party platform is not inconsistent with my own values. However, I'm offended by the attitude of the DNC website, which seems to categorize its issues in terms of appealing to target groups- if you're a GLBT, read this, if you're african american, read this, etc. It's a patently offensive strategy, despite it's effectiveness- eventually, everybody in the USA is one of a member of one of those "target groups" but being within the target doesn't mean that issues in general have to rise and fall on the narrow focus of one special interest group.
It's a question of "what do you stand for, for all"- and short of mealy-mouthed jingoism, I don't think either the democrats (or the republicans, by and large) really attempt to stand for anything. In principle, Kerry is anti-gay-marriage!
In balance, I do have an alternative- the Libertarian party
promises to be a Bush-spoiler, but doesn't require accepting the cock and bull of the democratic party.
I think you're trying to debate why I shouldn't be a republican- but I believe that the Republican party is the natural home to Libertarian minded voters, and that the 25 year old reign of the neoconservatives and religious right is about to end. Bush II is the last gasp of a faction which does not represent the true values of Republicanism. Republicans helped free African Americans from slavery, brought the first female senator to office, helped originate the ERA, and have done much more over the last 100 years or so to promote freedom than have democrats, on balance. I think that were I able to gather that statistics, the numbers would likely show this as well- and I will only be convinced by numbers showing otherwise.
Ronald Reagan, when he was Governor, opposed a bill in California to prohibit gays and lesbians from becoming schoolteachers. That's the Republican party I expect we will soon see once again, once Bush is out of office and his campaign of terror is shown to be not the will of America.