Ok, i have an addiction and its retro games.
Emulation is not a bad option, quality of these are improving on all time and the best of these are:
PS3 - RPCS3 - this one has grown significantly over the past year or 2 and well worth tinkering with to get the best results. Hope they manage to fix the graphics glitch in Ratchet Clank Nexus one day though.
Dreamcast - Redream - growing to be the no1 sega dreamcast emulator, apart from a few titles, the list of fully working titles is amazing and performance wise its incredible. Upscales all the visuals to, which has to be seen to be believed (actually many emulators do this).
Gamecube/Wii - Dolphin - very popular and well known, possibly the greatest emulator on earth, its feature packed and runs everything you can chuck at it.
Honourable mention goes to the Nintendo Switch emulator Yuzu. Still has a way to go but the progress made in the past 6 months is staggering.
However, nothing beats the feeling of raw hardware, it is a shame the prices have ramped up considerably as time goes on, let alone the space it all takes up!
My personal favorite systems are the Amiga 1200, Spectrum plus 3 and Gameboy Advance. Have a tonne of games but starting to run out of room, particularly for the bigger box ones. If you have a large collection and want to knows its rough value you can check this website out to find out what your gear is worth.
https://www.pricecharting.com/