Switch from micro USB to USB c, buy adapters or new cables?

Firt of I'm not a 100% sure this is the right site to ask this on but here we go. So I will have to buy a new phone in the near future. With this I'll most likely get one with USB c instead of now micro USB. I have quite a few cables for recharging (1-3 at home, at work, and one for my powerbank) all of those are micro USB and still work fine, some of them are long cables so they weren't that cheap. My question now is: is there any downside to buying adapters and sticking them on my already owned cables or should I have replace them? (clearly not all of them as I still have other stuff that charges with micro USB)