ok, this is off topic, but it needs a response for the laypeople . . .
Why would a lawyer not join his professional organization?
Do they require you to conform to a higher ethics than non-members?
No, it's not that. The bar associations are a fee grab, including and especially the ABA.
I am licensed in two states, one where the Bar association is mandatory (WI). My yearly license there costs me $275.
In the other state (IL), where it's voluntary, my license is $125 (or so). So why the difference in cost? It appears the "unified" bar in WI costs me $150 a year. There is currently a debate as to whether WI should continue this way, or make it a voluntary bar. I hope it becomes voluntary.
BUT, in both states, there are a number of bar associations in that state that they want you to join besides the state one: the county, the major city, the region (multiple counties). PLUS, all of these bar associations have "sections" that they want you to join that cost even more just to get a bunch of newsletters.
Don't even get me started on the "special" bars : gender, ethnicity, etc. I could easily spend over $5k a year on this BS if I bought into the idea that I needed to join them all. So I only join the ones that provide real benefits to me, like free legal research, reduced costs for Continuing Legal Ed, etc.