Roofs in this climate age unevenly. Sun bakes the south slope, hail works on whichever side the storm came from, and the rubber boots around plumbing vents dry out and split years before the shingles are anywhere near finished.
A pipe boot costs very little to replace. The same boot, left to split, lets water run down the pipe into the ceiling for a season, and now you are paying for decking, insulation, drywall and paint. Maintenance is not a subscription we are selling you. It is the part of roof ownership that pays for itself.