Its wasteful, inefficient, and most importantly, coercive.
I want people to be able to be as free as possible, free from the coercion of other people.
Believe it or not, both the American left and the American right use religious reasoning. The right uses religious reasoning to impose social mores, while the left uses it to impose social justice. There are exceptions to these fairly broad brushes, of course, but the reality is that its not really the religious Republicans against the politically secular Dems. If you said the Republicans were more directly motivated by religion I might agree, some parts of some Republican beliefs can only be motivated by religion (I don't think any atheists want to ban porn, but some would certainly mandate redistrubiution of wealth to the poor.)
To be continued.