Depends on the setup. I have a big shop-compressor in the garage that I never use for bike tires, but the tanks on this little compressor fill in about a minute, and I can inflate bike tires in a few seconds. It's definitely more useful if I'm inflating a bunch of tires or installing new tires, seating the bead and inflating from zero. For topping off two tires on one bike it may be only a few seconds faster and probably not worth the hassle. I also use an hand pump if that's more convenient so it's not an either/or thing. I spend a few thousand dollars a year on my cycling hobby so a nice little compressor/inflator that will last a decade or more isn't that significant to me in the grand scheme of things relative to the joy it gives me every time I use it. I've definitely spent more money on things that are less useful.