Skied as kid, moved to boarding for 5 or so years during uni as much easier ski off piste, then went back to skiing as took up ski touring. Since then learnt to telemark and did that for a few years but generally just ski these days, with the odd day of tele / boarding if in resort.
They are all fun and you’ll miss out if you only do one. I used to love boarding because it was great in off piste powder, but once my skiing became good enough to ski steep deep powder I don’t really miss boarding and when I do board it is generally to mess around on piste / boarder cross type things.