Texbear, most find the TW a really fun bike and it is pretty basic. I suspect lots of bikes are placed into the 'used market' with low miles because they fell short of the owners expectation. Some of us older riders are looking for a bike that won't fall over, and others of us are looking for a 30hp 250lb duel sport. The TW is neither, but still a very fun (forgiving) bike that can do lots of things, many exceeding most riders expectations.
It seems very little needs to be done to the bikes and most perform these chores themselves. Change the oil (MAKE CERTAIN THAT YOU GET THE CORRECT FILTER, COMPARE WITH YOUR OLD ONE BEFORE USING !!!!). Stock chain is low quality, keep it tensioned (often) and buy a better one when you are a few dollars ahead. You may also want to do a search on clutch spring issues. It seems many crankcase tension springs were incorrectly installed, do a search and check yours.
For what you discribe, the bike in stock form should be fine. Should you begin to demand more, many mods have been outlined (mostly) on the "other" forum. Gerry
Be safe my Friend......