I've been running a full Bitcoin node on a raspi for almost 3 years now. I keep it up to date and sync'd, and use it mainly for my own education and to monitor my utxos as I hodl. I suppose it adds in...
I went down the same rabbit hole as you're going down. Ran a full BTC node on a Raspi for 12 months then added lightning channels. After a further six months I shut it all down as I couldn't see the point of continuing with operations. Sure you're adding a bit to the overall network stability but I saw it as an opportunity to learn how it all works. Once that was done - it was time to move on. @nostrich