I can relate to a lot what you mentioned. I had similar feelings when the souldbound rewards started. I totally agree with Splinterlands having a good long term prospect as most of the other NFT based gamings I was involved with have vanished or gone dormant during the last few months. Not sure if selling all your cards is a right move in bear market when everything will be undervalued. That said you know yourself best so go with what you think right. Cheers!