Yeah, it adds up if you're too obsessed with archiving to actually cull some of it. Most movies are only worth watching once. Most music collections are too big. Most photos are duplicates and/or out of focus. Most games are replaced by much better ones.
I deleted a few hundred GB of movies a while back and realized I didn't even need a multi-terrabyte drive at all. Feels good man.
You have wayyy too much data. You're a straight up digital hoarder. You couldn't even sift through that shit in a lifetime, let alone use it all.
Making full disk backups and archiving huge collections of media assets you'll only ever use 1% of is just a huge burden of mind and a huge loss of portability and flexibility. Not to mention a waste of time and money.
I know you say you're an amateur as if professionals would have even more, but in reality, they've probably realized what a time sink it is and focused on just the small set of stuff that actually matters.
I deleted a few hundred GB of movies a while back and realized I didn't even need a multi-terrabyte drive at all. Feels good man.