Originally Posted by
Runngun
I have a new 2019 Giant Roam 3 with the 3x8 drive train. I have osteoarthritis in my left thumb and find the left shifter difficult to manipulate. There’s a shifter upgrade in the future. In the meantime am I wearing my components prematurely by staying on the center chain ring and using the cassette across all 8 gears?
No. There are 1x drivetrains and then there are 1x1 drivetrains.
Don't worry. Use until the gears skip and replace all at one go. Which would be a long time.