Gee, presuppositions in question details much, Anon?
I worked out that A2A wasn’t a special privilege, granted by people who had sought out my expertise judiciously by evaluating people’s expertise. (Pro Tip: Do NOT look at who got the most votes, when requesting answers. Look at who’s answered the most answers.)
No, A2A was being scattergunned at me, more often than not on subtopics that I didn’t have much knowledge about—or interest in.
Once A2A became not as special, I didn’t treat it as special. I restrict “Thx4A2A” to Quora friends, or to people who I can tell have specifically sought me out.
By all means, people of Quora, keep A2A’ing, just try to target them better. Having a vocabulary of three Farsi words, for example, does not make me a Persianist.