For me it's all an efficiency thing. I spend less time messing around with my old hardware than I do getting some *modern solution* to run an emulator properly. It takes me 15 minutes to plug in my main 486 Desktop computer - that includes 17" CRT, keyboard, mouse, speakers, MIDI Passwthrough, and 2 Microsoft Sidewinder gamepads - than it does for me to tweak DOSBOX.conf or keep exiting out some SCUMMVM game over and over to see which soundcard I want to use. once all that's connected, I have a SB AWE64, VESA 2.0 compliant 2MB SVGA, and Ethernet Broadband internet - including Social Media in Windows 95 via RetroZilla.
I'm done collecting TBH, I have enough fun projects to keep me occupied for years as/is. Riight now I have on the list, a digitizer replacement (M/75), a CMOS battery replacement (FMA3500C), a few electronics projects, some of my own design (Tandy, M/75, 3500C), and some upgrades (CD-ROM for hte Compaq, and HDD upgrades for the Compaq and 3500C).