This is an interesting topic, I've thought about this subject a lot.
I think that anything below 1800 OTB, its just a blunder festival basically. The players have not mastered the basic tactics that any computer or strong player could find. The player might know SOME tactics, some openings, and a few positional ideas, but nothing special. All these games are won on blunders...
As you rise between the 1850-2000 OTB range, the players are now starting to capitalize on all your basic mistakes, so give this player a tactic and he will find it. He knows how to convert a positional advantage into a win as well. He knows a lot of opening theory.
2100 and beyond, the strength gets really magnified, and we are now talking master level..
So it depends what you respect... I tend to respect anyone over 1900 personally..
Blunder festival. I think you got to the heart of what I was thinking.
The chess club in my town lists members' ratings on its website. It has 272 members; the top player is rated 2194, the lowest 100. The average rating is 1200 and the median is 1193. All ratings were within three standard deviations of the mean. The 75th percentile of this sample is 1446.
Since our "metro area" has a combined population of around 150,000 and only 272 are in the chess club, I think you could say we are probably lower than average when it comes to chess playing. I'm going to add 150 points (purely subjectively) and round it to 1600 for my estimation of "respectible" among the general population. Among chess players, I'd say it's more like 1900-2000. I don't think one should have to be a "master" to be "respectible" so I'm keeping it under 2100.