Question: For anyone who’s serious about storage performance, SSDs are always the fastest solution. However, WD still makes their 10,000 RPM VelociRaptor hard drives, and a few enthusiasts even use enterprise-grade 15,000 RPM SAS hard drives.
Aside from cost, is there still a reason to choose a 10,000 RPM (or faster) hard drive over an SSD?
Answers should reflect specific expertise, not mere opinion, and I’m not asking for a hardware recommendation.
Answer: 
This is a velociraptor. As you may notice, it’s a 1tb, 2.5 inch drive inside a massive heatsink meant to cool it down. In essence, it’s an ‘overclocked’ 2.5 inch drive. You end up having the worst of all worlds. It’s not as fast at random reads/writes as an SSD in many cases, it doesn’t match the storage density of a 3.5 inch drive (which goes up to 3-4 tb on consumer drives, and there’s 6 tb and bigger enterprise drives).
An SSD would run cooler, have better random access speeds, and probably have better performance, especially where the equivalent SSD, while costlier, is likely to be a higher end one, and SSDs generally have better speeds as they get bigger.
A normal HDD would also run cooler, have better storage density (With the same 1tb space fitting into a 2.5 inch slot easily), and cost per mb/gb would be lower. You might also have the option of running these as a raid array to make up for the performance deficiencies.
The comments also indicate that these hard drives are loud in general – SSDs have no moving parts (so, they are silent in normal operation), and my 7200 RPM drives seem quiet enough. Its something worth considering when building a system for personal use.
Taking all this into account, with a sensible planned upgrade path, and endurance tests demolishing the myth that SSDs die early, I wouldn’t think so. The thinking enthusiast would use an SSD for boot, OS and software, and a regular spinning hard drive for bulk storage, rather than picking something that tries to do everything, but doesn’t do it quite as well, or cheaply.
As an aside, in many cases, 10K RPM enterprise drives are getting replaced by SSDs, especially for things like databases.