If you like it, send your own money to fund it. It's perfectly legal. Don't make ME pay to kill human life just for the off-chance it might in a decade or two yield some benefit to those already living.
If you are going to support government funding of stem cell research, you have already abandoned the conservative principle of limited government performing only functions that are granted to it by the constitution.
Often the moral issues of what to let the government do and not do are caused by the failure to follow conservative principles -- by embracing limited government, we can avoid the entire argument over whether a particular thing is a good or bad thing.