From my experience bidets really don't work very well. Let me give you this analogy:
You have hands covered in dog poop. You wet your hands under the tap. You then proceed to dry them off with paper towels. Are your hands clean?
Wet wipes work a lot better. Now; you clean your hands thoroughly with a wet towel first & then dry off afterwards. Are they clean now? No, but a hell of a lot cleaner then with a bidet. Yeah I know they aren't exactly eco-friendly and clog the sewers but honestly I don't care that much.
Anyway; Things that are worth buying: Good quality clothes, good shoes, good quality tools, a good & comfortable office chair (if you spend a lot of time sitting), a good keyboard (if you type a lot), a good Amp and good open-back Headphones (if you listen to a lot of music), air conditioning, an induction stove, a good flashlight (who would've thought?), a good pair of tweezers, an anti-static comb, a good watch, a good leather wallet, a good leather belt (or a few), a good leather shoulder bag or briefcase, a good full-caliber all-steel rifle & shotgun, a good pocket knife & something called a "cool down glas".
A good piece of chocolate once a day.