Sometimes when I withdraw BTC to my wallet, I set really low fees like 50-70 satoshi per byte and wait for weeks, because I'm not going to spend those coins in the near future anyway. I think it's a good way to save a bit of money, because if you look back, you might realize that your fees have added up to a big amount in USD value, while it wasn't always necessary to get those coins confirmed asap.
So, do you use low fees, or always want to get confirmation in a next few blocks?
It depends, there are things that need a fast confirmation because if you dont get confirmed then you need to contact support and then tell them that it took longer than expected, since I prefer to avoid all that, most of the time I send a good enough fee, but when it does not matter if it takes a short amount of time or a long one then I send with a small fee.