When I was young and we visited grandparents, we used newspaper.
When I was young and we visited grandparents, we used newspaper.
You can do without it, sure, but if you don't have a bidet then it's inconvenient and annoying. Toilet paper is cheap, easy to store and it does not degrade (in a meaningful timeframe).
Basically, unless you are really space constrained, there are no downsides to having more than needed, so why not buy extra?
I say this as someone who had to go without a couple days because the stores had been cleared of any toilet paper.
(When I was young schools and public toilets always seemed to have horrendous tracing paper like stuff).
So why should your ass be any different?
Granted, I bet a warm-water bidet feels fantastic and I would probably never go back if I had one.