This seems like a weird comment. Many people use a mouse for long periods. I play competitively and at the end of the comp season each year I'll often play in f

This seems like a weird comment. Many people use a mouse for long periods. I play competitively and at the end of the comp season each year I'll often play in full-bore try-hard mode for 14+ hours straight with no issues (I'm in my 40's). I think it's just different for different people.