Wireless mouses suck. More input latency, batteries needed, more costly and generally just not better. A cable is rarely an issue in a desktop environment. But if you're coming from a mouse that is "kind of broken" then well, I guess it's an upgrade. Your mouse is almost certainly shit tier, I'd suggest upgrading if you want something considered good. Up to you though, if your current mouse works for you and you're fine with it then whatever.
If you want to dump money on a tablet, go for it. I did and am glad with my purchase.
If you want to dump money on a tablet, go for it. I did and am glad with my purchase.