They can never be satisfied until they are no more. This is not just because they are professors or academia. If you look at other fields too, those people found their are always on the verge of getting more and more of what will be beneficial to them, either money, idea, knowledge, good offers etc. This is just how humans are designed and nothing more.
You can’t limit a user to what the can post in the forum when they have something tangible to share and add to the discussion. This should not be seen as a way of getting more merits but a way of sharing knowledge. If they get merited, all good and if not, it’s still all good since the intention was to share idea and not get merited for sharing knowledge. So don’t see all users post with already plenty merits as a means of getting more merits.
However, I will be very glad if someone can highlight more on this and educate me more thanks .
OP, you’re talking about money here. One just have to be contended with what they have but that doesn’t mean you shouldn’t look for more money or how to keep multiplying your money if there’s a means to make that happen. If the risk to reward ratio is tolerable, why won’t they trade and gain more? It is just natural and human are bound to always look for ways to have more source of income but like I said been contended is what matters and observing that doesn’t mean you shouldn’t look to expand your income.