I'm sure some people are just crap hoarders. I've got a 128gb ssd and my data backup size for the last 30 years is about 12Gb including music and photos leaving the disk about 60Gb used.
1Tb? Never shall I fill one.
1Tb? Never shall I fill one.
Are all the photos great? No. Will I know which ones will prove useful in the future? Only approximately. Storage is cheap!
Storage is cheap but ending up with so much noise you can't see the interesting bits is expensive on time, and that is finite.