I'm obviously a few decades late to the party, but I've been obsessed with analog hardware synths for a few years now.

There's something magical about messing around with a sequencer/arpeggiator, mixing together a couple of VCOs, changing their wave type, detuning them, modulating filters, amplitudes, rhythms. The sonic options are staggering, you can sit there all day turning knobs and stumbling upon interesting and quirky ideas.

Part of me thinks that "it's all been done before", yet there's joy to you doing this yourself from scratch, even if you're not the pioneer.