I don't tip because I use next to no 'services'. And when I do, well, I don't tip. It's just not a thing here. Very very occasionally I might but so rare I can't remember the last time I did tip.
I also don't go near shops (any time of year really) and buy online. I'm looking for convenience in my life, not adding bullshit by mixing with debt-laden peasants and being forced into inane conversations with shitheads looking for a handout.