There is extra enjoyment to be had knowing that you came into ownership of something according to a set of agreed upon rules. That is to say "legitimate" ownership. Legitimate NFT's can make one feel part of a community so there is value in that.
Perhaps most importantly, "legitimate" ownership generally implies that the artist(s) were compensated by you (somewhat) directly. That, in itself can enhance the enjoyment. There are more factors at play than merely ego.
I'll give a personal, real-world example. I own ~$1000 item that I bought as part of fundraiser for someone struggling with medical bills. I was also friends with the creator and wanted to support their work. So, even though I paid much more than I would have paid had I just bought it directly, I get a great deal of extra satisfaction out of owning this item. I supported two different people whom I admire by purchasing it. That makes me happy.
I'm not a huge fan of NFT's (as they exist currently) but I don't think it's correct that enjoying ownership of NFT art, or art in general, is solely ego-based.
