A single decent gen 3 NVMe drive will still crush any SSD or HDD raid setups. HDD erw cheap for the capacity you can get now. No reason to have multiple in a normal system nowadays. When I built my NAS I got rid of all the 1, 2, 4tb drives I had in my main system. Most people don't need 4 SATA ports let alone 10. Get with the times old man.
Old man? I am in my mid 30's and most of my drives are 10TB or above. Higher capacity drives means I can download and store more stuff. Yes, there is still a need for more than 4 SATA ports.
You know, back in the early 2000's, there was a local computer repair shop that had been around for decades and at the time, hard drives were going up to 500GB at the highest and most expensive capacity and I got into an argument with one of the guys there who said he had an 80GB HDD and that's "all he'll ever need". Well... I bet if he could take back his ridiculous and asinine statement, he would.
Anyways. The point is that you sound just like that guy.
With Seagate planning 120TB HDD's by 2030 and Samsung planning 1,000TB SSD's by 2030 there may indeed come a time when storage capacity has outpaced the ability of rabid data hoarders like me to use it all and having a shit-ton of SATA ports really is unnecessary but that time is not now and you are a fool for thinking it is.