Because if I need to deploy some tech for a company with a thousands of clients I want something what doesn't need my attention for every other client station. I need something robust what would work 99% of times and for a 1% what disbehave I can OR just change the environment so the client would run or drop a ticket to the guys who I am paying for diagmosing these things and after a couple of days or weeks:

Just install a new version which would work OR

Have the understanding how I can change the environment so it would work.

The thing is what I don't need to spend my time on solving these things.