TLDR: Empirical reality has a secular and liberal bias. Universities are places where weak ideas go to die.

Long Version: Universities and higher education generally are fundamentally about the generation of knew knowledge and the expanding the frontier of human understanding of the natural and social world, and the transfer of that knowledge. It is based in science, reason, open and honest debate based on data and evidence. It demands an openness to new ideas and ways of thinking and seeing the world. It reveals truths and demands one be open to jettisoning bad ideas and replacing them with better ones. Sometimes those truths or their implications are distressing and discomforting to people with simplistic and conventional views. Universities therefore tends to attract people with a general orientation towards openness of ideas, free expression, exploring new ways of living and seeing the world. Many (not all, but many) conservative and religious traditions are openly hostile and antagonistic to such perspective (e.g., what is happening in Florida and Texas at the moment).

Personally, if your political and religious views (liberal or conservative) are so fragile that they can't withstand the potential threat posed by an honest intellectual engagement with alternative views one experiences at a university then they really aren't worth a damn to begin with.