I still primarily print from sd card as well. I only want the pi for the awesome time lapses that octoprint can create. I do not believe in printing remotely. But I do believe in regular electronics upgrades. Just because of how that whole industry is obsolete every 2 weeks. A perfect example of this is I bought a SKR 1.3 board, installed it, 2 days later I burned the board and when I went to order a replacement, there is now the skr 1.4 and the skr 1.4 turbo. Electronics and that whole industry stays fluid. If your controller is 3 years old, it is out of date. If it is 2 years old there is better on the market, and if you just bought your controller this year, odds are there is already something better out or already in the pipeline. Which to be honest really adds to the whole pain of spending hundreds of dollars on one component that suffers from this short life expectancy. The cheaper parts are empowering in that they allow us to stay up with the current gen stuff without being rich.