I think it's really hard to give a general answer to that. For me personally meme-coins are absolutely useless and i even think that they are harmful for the whole crypto space. They are taking away attention and capital from real projects that are actually trying to achieve something. Of course there were some meme-coin projects that made early investors rich but part of the truth is also that maybe 1 out of 10000 meme-coins is really making good gains all the others are crap and a waste of money.
NFT's are also useless in most cases. I know a lot of people are seeing them as a digital piece of art but in my opinion almost all NFT's should not be considered as art because they are generated by a program or even by AI. So i personally stay away from meme-coins and also from most NFT's.