Easy, having spent years riding full sus, six inches of travel front and back, massive disc brakes and being gnarly to the power of rad all over Wales/France/Switzerland/England I'm a bit more sedate. I still enjoy riding in those places but the people I used to ride with are now much more extreme than I want to be. The places that I ride are a bit dull on a massive;y advanced bike and having loads of gears makes it a bit easy. Gears off and back on a hardtail, suddenly my local woods are fun to ride again, and I can pootle along at my own pace without feeling like I'm constantly in a race.
Interestingly I got a new P7 yesterday, and despite planning to take the gears off, I though I'd give it a ride with the gears on, see what I was missing out on. The ride to the trail was very easy, I could ride up that killer climb that gets me every time whilst sitting down and every time I approached a jump/drop/rooty bit I was in the wrong gear.
There is a place for gears I'm sure, just not on my bike.