I find white towels not terribly practical for family use! Coloured tends to last longer.
As with lots of things, if you feel everything needs to look or feel totally new for it to be acceptable to you, you will regularly replace things that are perfectly serviceable. This goes for sofas, carpets, towels, bedding, pillows, garden furniture etc.
With some things, it’s a case of buy-cheap, buy-twice. However, with lots of things, lower priced items can be fine. Some people though are disposed to replace everything regularly. Others have pre-disposed to avoid that.
That said, of course there comes a time when things need replacing. There will always be a range of points between which most people which make that choice, from sooner until later.
This thread is reminding me of recent Gavin and Stacey special where zoom buys towels for Stacey’s mum, because hers are like a ryvita.