D&D 5e is built around three pillars: Combat, Exploration, and Social Interaction. I like this approach, but I think for running a game it is better to think of it as Combat, Intrigue, or Adventure. The difference being that both Intrigue and Adventure have more of an active and interactive sense to them than just "talking" or "looking around."
The question though is, of the three which pillar do you find you like the most?
Combat is something that I like a lot. Done well it can be a lot of fun. But if I had to choose I'd probably say adventure. I like how fast adventure can go, how action packed it can be, and if a system can do adventure well - like 7th Sea 2nd Ed - the game can just be a real hoot.
Intrigue is something I love, but I'm not super great at it. I wish I was. A well done intrigue is amazing, but no intrigue tends to be better than bad intrigue so it loses points.
What about you though? Which do you prefer?