My usage is up, too. When I moved here 7 years ago and went house hunting, one of my must-haves was a hot tub. I actually found a house with an indoor hot tub room.
As I discovered when living previously in Phoenix for many years in a house with a pool, usage dwindles over time. After not using the hot tub for several years I have now drained it. I have my Hottop set up on a small table next to the hot tub and the spa cover now has about 50lbs of coffee, digital scales, measuring scoops and such spread out across it!
The consistency of the S1 really helps with the roasting as you can feel fairly confident that, with most of the other variables removed, the differences you taste really are due to the coffee type and your roasting prowess.
My wife has never liked coffee and I now have her up to about 4 lattes a week. Of course that's also with the addition of Monin sugar-free syrup so one might argue whether she's really drinking coffee

Maybe the training wheels will come off some day!
When I make a latte I also get the satisfaction that it cost $0.30 rather than $3.00+ . 1/10 the price of *$ and 10x better. You can't beat the economics of that. I really will break even....some day....really!