I'm torn because overall I agree with Erik's reasoning in his first post but I've played a lot of different courses these last two years where the greens weren't in great condition.
The combination of the poorly maintained greens and current hole size made making a putt longer than 6' more about luck than skill. On those types of courses I think a 5" hole might make it more fair.
I was just reading a few articles about Jack Nicklaus. In one, he just turned 75 years old and was lamenting that the day he could not score below 75 would be the day he would stop playing altogether,. He then stated that day has come. He can still draw a crowd obviously as people will line up six deep just to see him on the driving range. In a way, these articles give me a bit of consoling in that I need not set goals very high. I broke 80 twice in 2015 but will be lucky to break 90 often, this year. My index is trending downward but I only have a few scores recorded having lost all my spreadsheet data and had to start over. I doubt very seriously if I will ever achieve single digit status, but if I can just maintain what I have now, I will be satisfied. I am 75, and in good health considering I do not even have much of an exercise program. I consider this as I look down at my lean, flabby calved, veined legs, sunken eye sockets, thinning hair, and nasty disposition. Reminds me of the commercial on TV. "I suck at golf, but I hope I can continue to suck at golf for a long time".