regular maintenance is the same on any bike though, my (old, I guess) bike goes through about the same maintenance schedule..but I'll admit the new schwag out there is pretty killer.
have you checked out how much a Sram 11spd cassette runs compared to a 10 spd SLX or XT though? Even the entry level 11spd stuff is 4-5 times the price, maybe more…is the tradeoff worth it? You can't put a price on the fun of riding a bike..until you realize you actually can.
Good lord I'm dreading replacing my 11 speed cassette for the first time. Hopefully a cheaper option available when I need to. I'm sure they'll be a 12 speed ultra narrow system to go with 28.35" wheels by then and 11 speed will be on clearance!