I finally got a used tractor about a year ago. Can't honestly say I need it, but man I hate digging. Just loathe it. Wife was certainly skeptical, but has come a long way since the tractor allows me to get yards and yards of chopped mulch loaded up at the city recycle center for $6/yard and then fill up all the flowerbeds for her after she's done her planting. I think we got at least 25 yards of mulch distributed this year into flowerbeds just on our 1 acre suburban lot.Nice tractor. I would like a riding mower, but right now it isn't a need. What I do need is a rototiller. They are pricey!
I got a 5' rototiller to hang on the 3-point and we did a nice in-ground garden this year. It was much larger and therefore much more productive than the little raised beds we'd been gardening with.
I'll admit I do believe renting is better. Maintenance is a huge $$$ factor. Little front tires are $150+ EACH. Haven't been willing to even look up $$$ for the bigger rear tires. If I were going to do it again I'd rent the tractor, but might still have bought the tiller outright. 3-pt tillers are difficult or impossible to find at a rental yard, but if you ask around you'd find someone like my friend who'll come in with this tractor/equipment to do whatever you wanted (shredding, tilling, dirt leveling, etc) at very reasonable rates. Even I could be convinced to rent my tiller out with a large enough deposit to ensure it'd come back. Solutions are out there if you know the right circles to ask in. I have rented the little 5 HP walk behind tillers in the past. My back is much happier to have a 3 point tiller! ;-)