Voted for "neither". Have a hangup/issue about paying for something I think I can do on my own.
Never had my nails done, I'm 33. Concept of nail grooming as fee for service is familiar to me only as "something other people do". Bit my nails chronically 'til a couple years ago, so it was completely off my radar screen. Cut & file my nails myself, don't care that they're a mess because they're much better than they were.
I cut/trim my hair myself. Growing up, mother did it for me. For a few years (during my teens) she took me to her hairdresser for perms (I wanted wavy hair, but was displeased w/results). After that, I got a buzz cut, once it began growing out I kept the underside shaved. That required a willing friend on many occasions, sometimes I'd have to do it myself. Did all that for years, got to be too much trouble maintaining, let hair grow out finally.
Color my hair myself, too-had friend in college do it for me at first, she taught me enough so I could. It's a revolving door/treadmill/cyclical habit: roots growing out which I re-dye, the need to repeat at intervals, wish I didn't feel addicted to the chore of sprucing up my appearance this way. Dislike having brown hair, my clothing & skin look better when my hair is (artificially) blonde.
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*"I don't know what it is, but I know what it isn't."*