Pretty sure that M.2 NVMe has little to nothing to do with SATA or IDE. It's separate altogether.

I liked M.2 NVMe SSDs enough when I first started using them that I saw no reason to try other things like Intel Optane, SATA SSDs, or hybrid drives. I assumed that Optane would provide no worthwhile performance improvements, on the one hand, and that SATA SSDs and hybrid drives were too slow, on the other. That the SATA port is basically a severe bottleneck or whatever. M.2 NVMe is an unusual example of something actually being done right for once, whereas I thoroughly dislike hard drives.

I never assembled anything for home usage before NVMe came about. I wouldn't mind trying a PCIe SSD (Edit: Apparently these are no longer a thing) in some hypothetical future build, but I have no problem with M.2 NVMe. For instance, you don't need to do any of that time-consuming data wiping using software like DBAN on Samsung NVMe drives, their Secure Erase software does the job in a matter of seconds.