I use a mouse regularly for copying and pasting in the terminal (including in vim which I'm sure is sacrilege for some). I use vim almost exclusively as an editor, but I guess old habits die hard and I've always found highlighting and copying with the mouse, plus clicking and pasting to be more natural for me.
I also rely on it for copy pasting purposes but if you have :set number enabled you might, the numbers may get in your way.
This is where I find myself using :set invnumber that I have mapped to F2 so I can quickly get rid of them.
