I might not want to run my own DNS servers. I might also not want to set them to ones provided by just a single VPS provider for my use case. I've migrated between DigitalOcean, Scaleway, Hetzner, Time4VPS and Contabo in the past and I don't want to have my domains be tied to any one of them, much like I might not always want to have Cloudflare in the mix.
For example, recently I migrated from Time4VPS to Contabo due to better prices and more RAM (I realized that most of the time my servers are near-idle, so some overprovisioning is perfectly fine as long as it leads to money savings), I could just change the A records for specific servers in NameCheap and the CNAME records that point to those for the actual apps picked up on that and it was a pretty trivial migration. Having the NameCheap DNS UI not suck would have made that even more pleasant, vs it being kind of slow and clunky.
That move saved me somewhere between 400-800 EUR a year, which with the salaries here is pretty good!
For example, recently I migrated from Time4VPS to Contabo due to better prices and more RAM (I realized that most of the time my servers are near-idle, so some overprovisioning is perfectly fine as long as it leads to money savings), I could just change the A records for specific servers in NameCheap and the CNAME records that point to those for the actual apps picked up on that and it was a pretty trivial migration. Having the NameCheap DNS UI not suck would have made that even more pleasant, vs it being kind of slow and clunky.
That move saved me somewhere between 400-800 EUR a year, which with the salaries here is pretty good!