I am just messing with you… If you are in your 20s then fair play, I am ancient to you. Lol…
I am lucky, I don’t have to keep dry cabinets for my gear, I am able to maintain humidity without one - thankfully - my wife would kill me if I started buying those.
The Canon Rebels were a turning point for me. The advent of the 350d was the first time I was interested in doing photography it signalled an accessibility to the hobby that I hadn’t previously thought I could. I didn’t dip my toe in the water until the 1100d came about in 2009-ish. It got increasingly expensive very quickly after that.
If you haven’t used any of your equipment since 2018, then yes you should liquidate it and consolidate onto something you will use.
I'm middle age by now I still have a mentality of a teenager though!
The most I could get for is ~20% of its value... I was so dumb to buy 128GB CF cards for ~$100 thinking it a bargain back in 2015... now no one's gonna buy that unless it's ~$20