Hi, :) please don't be disheartened, I am not a restorer but have had a couple of photo's "Touched up / Enhanced" etc in the past and have always said Thank you for the work, after all, good manners cost nothing.
I think the problem in part is that a lot of people do not understand the vast amount of work and skill involved in restoring someones treasured photograph and as you say just take it for granted.
I am in awe of the work carried out on this board and think all restorer's are fantastic, I have seen photo's put on for repair with statements along the line of
"I think this is beyond repair"
And smile to myself thinking, "Ha! wait till you return and see the things that these people can do"
Take heart from the fact that you and your fellow restorer's bring so much joy into someones life with your skills and take it from me and all the other chatter's that you are truly valued.
:) :) :) :) THANK YOU :) THANK YOU :) THANK YOU :) :) :) :)
Regards and thanks always
Frank.