No, I wouldn't say it has no disadvantages over Notepad or simple text editors. I feel I have a greater degree of control when I'm inputing all the code myself. Whether this is purely in my head or not, it sure seems to appease me
Granted, my code is hardly perfect. I need to work a lot at getting it up to standards and writing things the way I should. However, I would argue that if it seems to work to your satisfaction, then standards be damned!
ps-I think I'm going to get one of those "made in notepad" graphics