Give up Schmke, Max and Pro Kenneth. Moveforwardalways lives in a dream world if he thinks public shaming and forcing people to play tennis that they don't want to play would be a great addition to RECREATIONAL tennis. People have different attitudes and ability levels, and that is why there are different levels. If a 50 year old woman who has never played sports wants to start playing league tennis because it's a fun way to get exercise, meet people and improve her health, good for her. If she doesn't want to play singles, that's OK. If others want to spend a lot of time honing their skills and improving their game, well that's OK too. Tennis snobbery in adult recreational tennis is so ridiculous, and it's a barrier to new players and beginners.
The computer rating system does a pretty good job of making a level playing field. Plenty of people make it to the 4.0 level with holes in their game. So what, who cares? Their strengths are obviously good enough to balance out their weaknesses. I hit with a lot of 4.0 men who have terrible backhands. But the rest of their game makes up for it.