I grew up building model airplanes and cars from scratch using kits and glue as well as puzzles and Radio Shack electronics kits to make noises and projects. Eurorack and modular is like an erector/lego set for building music/sound design blocks and the hands on factor appeals greatly to me instead of having an all in one synth box that creates music. Now for travel, my Elektron Analog4 does the job quickly and easily compared to hauling a large case of modular gear around or if I just want to whip out a quick and dirty music track. I am getting into sampler/granular synthesis and picked up Mutable Instruments Beads module (Clouds v2) recently and really having a blast with Plaits into Beads into Rings and using Marbles for LFO/randomness stuff.