At What Point Are You Ultimately Satisfied As A Collector?

yes but there are not many that I need anymore. thats one of the perks of collecting for 40 plus yes you already have the old stuff. but I will probably never end looking for world coins

He is saying he will never stop looking for world coins.

"Is there a coin or set, that, once owned by you would stop your collecting of new coins and just sit back and appreciate your collection?"

Seems to me the word satisfaction makes for a valid comparison here to sex.
Each experience brings its own specific satisfaction but that does not relieve the desire for more/better.
Tho I suppose there comes a time when we just sit back and enjoy the grandchildren.
It's all good

At a coin show today I was talking to one of the larger dealers there about how he got started. He said he too was a coin collector once and basically still is but after a massive amount of coins started to accumulate, he figured why not make money from this hobby. He too had multiple sets of everything, rolls of stuff, boxes of 2x2's, miscellaneous coins all over the place. He tried one small coin show and actually almost sold out. So he continued taking his own coins to the next one and the next one, etc. Eventually people started selling him coins and it just kept on going this way. So I asked just what are you ever going to do with all this inventory in the future, if that ever comes up. He just stared at me for minute and said I never thought of that.