MacBook Pro in sleeping regime Will there be any damage to a MacBook Pro if I keep it in sleeping regime all the time?

The reason I don't switch it off is I had problems with the start button. It stopped working within a year and under guarantee they changed hardware but no one said to me how to exploit it properly or gave recommendations. (It turned out start button is linked to hardware and it's very weak and should not be pressed frequently but instead Macbook must be in sleeping mode to avoid pressing start button often).

In one year the same problem happened. As changing hardware is expensive they offered me to reformat it and all my applications were erased and it seems now it's running software for Macintosh.

What can I do to prevent any troubles?
I normally use the sleep mode 99% of the time.  The only time I ever shut down is when there is a software update that requires it.  Or once  a month or so, I see my machine getting "confused" and a restart seems to resolve the issue.  (I usually just restart and then continue, using sleep when done for the time being.)