To be honest, we are out of the goal that Bitcoin was created for. Now it's become an asset to hold instead of cross-border transactions without a third party. As per your title, it's good holding Bitcoin. Because holding Bitcoin means less coin circulation on the chain, so it does strengthen the Bitcoin ecosystem directly. Selling Bitcoin means circulation is increasing, and more sales mean dumping Bitcoin. So holding Bitcoin gives more power to the whole Bitcoin ecosystem.

Holding is definitely better, but hold for life; don't hold it for a lifetime. Our Bitcoin holding should be used in our real life. So we must have a goal to sell it and take out our profits. If we can't use our Bitcoin when we are alive, then it's useless after death. I am currently holding a small amount of Bitcoin, but wherever I feel the need to sell, I will sell. Of course I will wait for the dump and accumulate again.