Get a Weber and do some pork ribs or brisket like this, (which you can’t do on gas)
I got the Pitt Cue BBQ book Xmas before last and as I already had an old gas barbecue I tried doing slow cooked smoked brisket and pork on it. Burners on low on one side, off on the other. Tray of water and smoking wood (bits off my apple tree or walnut worktop offcuts) on the hot side, meat on the cold side. Sugar thermometer stuck through a hole in the lip to monitor the cooking temperature. Cooked it for 6-8 hours.
Succeeded in making both awesome pulled pork and smoked brisket. The latter was some of the best meat I’ve ever eaten. So you can do it on gas – you just need to find a way to get the smoke happening and with either method you need to have good rubs and/or sauces.
I’d like to get into proper charcoal barbecuing but I’m generally very short of time and I don’t want to spend a bunch of money on something I might not use so much. Putting effort into good food is always worth it – I started curing my own ham a few months back and I’ve done three so far (not whole legs!) and they’ve been fantastic.
Top tip – find a proper local butcher and get to know them! I’ve had some fantastic meat from mine. If you fancy steak, get some well aged picanha (rump cap), cook it whole and then slice and quickly sear the sides.