Yea youre right!Changing your own RAM does make you a professional; it makes you an enthusiast/hobbyist/tinkerer.
I learned long ago that time spent messing around with your computer hardware and software generally detracts from the time you have to actually use it for productive work. Sure, it can be fun and educational, but it's not work (unless your work is upgrading or repairing computers).
Sliding off the side off a tower and popping in a stick of RAM takes just 5 minutes, that is 5 minutes that could have been being a professional and running into RAM limits!
Gee, thanks for that knowledge!