But why is it so wrong to talk about or ask how much money you/someone makes? Are we that judgmental on each other as humans that we devalue people based on how much money they make a year?

I am genuinely interested in how much money computer programmers make a year, yet no one wants to answer that dreaded question.
Everything I have read online has been very inconsistent, as far as the yearly salary, which ranges from 40,000 to 120,000(supposedly). However, I have yet to talk to an "actual" programmer about how they feel their company pays them and what to expect when applying for a job of similar position.

The last thing I want to do is offend anyone, but how am I supposed to know what I will/should be paid when I get out of college?