The vast majority of people who attend Reform Jewish synagogues do so, because they want a watered down cultural connection to Judaism or to Jews without having to commit themselves to any demands or changes in their lives or their community. Or if they do call for change it is not to fulfill any religious idea, but rather it is to fit in with some new fad, or political idea in the secular or non-Jewish world, and to give it an after-the-fact Jewish stamp of approval.
Regardless of your ideology or zeal, the mere association with this group over the course of time is likely to dampen one's desire for Torah and G-d.
One, because many believe in evil ideologies to justify their non-observance of commandments. And secondly, because almost all of them put desires ahead of morals which will influence someone who joins their company to do the same.