Not that storing media on an SSD is bad, just pointless.
Movies, files, music and such doesn't benefit from the extra speed and is often large, so why put it on the small amount of fast storage you have?
An SSD does degrade over time due to read/write cycles (which is why you dont defrag it), but modern SSD's have redundancies built in and software like TRIM to extend the lifespan. By the time the SSD used up all its read/writes, it will be long obsolete.
Internal HDD for storage. Much faster and cheaper than external.