I started out with a mouse, then track balls came along and I went with those, reversed back to the newer style mouses and still use them. 0 maintenance with them and I like that, no cleaning, no busting the little wires when doing so. The only thing I need be aware of is no side buttons on the mouse. If I get those, sometimes my fingers have a mind of their own and push or squeeze the side buttons (they would be what are call a 5 button mouse, I think) causing all sorts of bad acts. For the most part my fingers are well behaved, unless I'm near my wife, but some meds I have been on cause them to move uncontrollably. When that happens sometimes it's all I can do to aim the damn arrow on the screen.
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Just enjoy what you do, as best you can, and let the dog out once in a while.