It is curious that you don't want to sell anything, as most bounty hunters are already selling whenever they get the tokens, me included, but that is definitely a good practice as it may help the market grow in value.
I know about it but I chose projects which I consider promising. I
And especially now when market in the ass to sell something is not good decision
Since you have chosen your favorite projects and you think they have a future, then your approach is completely correct. When I choose a bounty task I like, I will make the same choice. Not eager to sell those tokens