There's a huge weight saving in your bag overall, it's not just about the body and lens attached at the time. I went from carting about 10Kg worth of gear in the bag to less than half of that. I would say that's pretty significant, especially if you don't drive everywhere, but cycle or walk and you're out there for hours.
For me photography isn't all about the gear, it's nice to have gear you enjoy using, but it's more about the overall experience. Just being out in the fresh air, experiencing nature, visiting places you may never have bothered to check if you weren't after a nice image. I've learned a lot about wildlife, plants, geography and history through photography. I like to do a little research on the area/plant/animal I've just photographed, so not only am I getting out more, I'm learning along the way.
It's like any other hobby though, if it becomes stale, just step away from it for a while. I did for almost 2 years, just lost the urge, sold off all that hefty gear and stopped worrying about the latest tech or trying to keep up with anyone else. In my own time, when the feeling returned [and it always does!] I bought into much lighter gear and promised myself I'd not stress over how many images I would take, or where I would go to take them, or what 'style' I was after. I just let it happen, whenever the mood takes me I can grab the bag, jump on the bike, or a bus, or a train ... and just go have some 'me' time
I also really enjoy the post processing side of it, it's almost as important. I find it very therapeutic. I'm sure the average pro doesn't, it's more like a chore I'd imagine. But for us enthusiasts we're not forced to meet deadlines. Just do it at your leisure.