Ps. Also remember to spend at least 20% of all the coins you buy, to feed the merchant network and use case for Bitcoin, or it will die as a currency.
Meh. I'm not going to force myself to spend Bitcoin just for the sake of spending it. I use what I consider to be the best option, which one day might be fiat, and the other day Bitcoin.
I would however be more motivated to spend through Lightning considering that it offers more privacy than on-chain payments. On-chain payments require me to first mix them, which isn't a problem doing so from time to time, but not really pratical for use on a daily basis. Lightning makes life way more easy in that aspect, and it's more convenient than any other centralized payment option. The only downside is that it doesn't have as much adoption (yet).