Has this happened to you? How can it be stopped?

Old stuff I've tried to resist buying -- stuff that was considered very good but more expensive than I could afford back then.  As time passed, I got richer and those pieces got older and more buyable on the used market.

Gave in a few times; got me a Nakamichi Dragon cassette deck and a McIntosh MR78 tuner for my music room.  And for a bedroom system an SAE 8000 tuner and a Carver M-500t amp.

When to stop?  Either when I run out of rooms or money.

I still want a Victrola someday to play old 78s on. 

It’s a hobby, not a problem unless it becomes obsessive that interferes with your mental health.  

@blisshifi 

+1 for: "He probably has the best system for any kid his age"

This is what I had at his age:

Doesn't look like the link worked... Anyway, it was a Disney record player. The "tonearm" was plastic & shaped like a dog bone.