Free and open source licenses are really useful. Works licensed like that are worth significantly more to me that works that aren't licensed like that. Of course, charge whatever you want for your code, but I don't think you should avoid charging for code that has an MIT license. Quite the contrary!
Thank you. I do like to write. I'm also really happy when people read what I write. It looks like we have a lot in common based on what you've written there. If you'd ever feel like trying out pair programming (remotely), give me a shout!