I am from the same age bracket, and thus so are a lot of my friends. And while I am personally stainless
![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
many have some. However, in "my circle" it usually is something small and hidden (ankle tats are pretty common) and generally unintrusive by motive. The aforementioned skull in the neck I would certainly associate with some group. And yeah, I dated a girl outside this bracket (younger) and she was way more colorful. Tramp stamps of course had a surge of popularity at one time, but even that was limited to certain social groups. Maybe peer pressure comes in.
However, I think the main thing is that at one point in time when we were already alive a tat would indeed be frowned upon if visible, while these days people may form a personal opinion on whether they like it or not but usually won't jusge you or your competence in a certain field or your general character by it (unless you tattoo "Adolf Hitler was right" on your forehead or similar). Investment firms may be the last exception where you shouldn't sport them - or need to if the firm is young and hip and suchlike.