It’s always funny to me when people say buying a nice watch is a waste of money, meanwhile they’re blowing money on dumber things. When you’re wearing a nice suit especially, it’s a good idea to have a watch on, i think it looks tacky when people wear their Apple Watch or garmin with a suit (I’m sure some will shout me down for this, just my opinion). You don’t need to spend a ton of money on a watch, just something decent. It’s hard to beat the value that Seiko provides, they’ve got tons of models you can find under $500 and last a long time.
What’s your budget? If you’re just starting, don’t go crazy, just get into the hobby, tons of options under $1000. Hamilton, Seiko, Tissot, Bulova, Mido, tons of others. I’d say look at Hamilton or Seiko personally, really can’t go wrong there and easily can find these slightly used for even less. If you have a higher budget, look at Omega or Grand Seiko. I saw someone else mention spending good money on nice shoes as well & I agree. Things that last are worth spending a premium for and I see a nice mechanical watch as the same. Don’t need to buy a Rolex to still enjoy a nice watch.