Do a search these questions are daily.
You will lose money
you will get frustrated that your batterys dont last as long as you hopped at times
cold, no but get the wallet out for coal and the likes
mooring fees? yes if you dont move to much playing the system is harder nowadays
ongoing bills? blacking, servicing, diesel, batterys, etc etc
Incidently I live in a house and my boat is at a marina, sometimes i lust to just move on for a few months and cruise. Sadly with a family and kids I cant. So life is short do what feels right. It isnt a cheap way to live correctly.