nothing inherently wrong with that. You won't have maximum access to credit and multiple bank relationships but those consequences may not be relevant to you.
> you make sure you don't overspend
That's great, but not related to the number of credit cards someone has.
> never paid attention to how many points you accumulate.
Some people obsess with points but there's a difference between not accumulating optimally and not accumulating at all. It's incredibly simple to get a 1-2% discount on all money you spend by using credit cards. But, again, that opportunity cost may not be relevant to you.
nothing inherently wrong with that. You won't have maximum access to credit and multiple bank relationships but those consequences may not be relevant to you.
> you make sure you don't overspend
That's great, but not related to the number of credit cards someone has.
> never paid attention to how many points you accumulate.
Some people obsess with points but there's a difference between not accumulating optimally and not accumulating at all. It's incredibly simple to get a 1-2% discount on all money you spend by using credit cards. But, again, that opportunity cost may not be relevant to you.