Not all gas engines have an electronic ignition, I have Zinoahs with mags and really like them a bunch. I keep 6 or more planes in my really small shop and sometimes I do get a glow or gas smell out there for a day or so after I put them all away after flying. As for storing gas in the house, No Way. I do have a can of gas in my shop in a corner. Glow fuel I cap up so no real problem but I still wouldn't keep it in my house. My shop is unattached but I do worry about having so much combustibles stored out there. It isn't that far unattached!! Power source is up to the pilot. I have friends that have gone from gas and glow to nothing but electric and love it. We all have our favorites and mine are a bit different then others. My favorite glow engine is the YS but I was taught to tune buy a YS rep a long time ago. I just don't understand anyone having a problem with them. OS is my number two all time favorite and I put Saito at number three. They are OK, I just like OS better, my choice. The other four strokes I avoid meaning I just don't care for them at all, my choice. I would never advise anyone without long time knowledge of engines to ever buy used. If you don't know what your looking at you can get stung. These days I trade or am given used engines but I have been working on them for a lot of years so I have done well 100% of the time. Wet is not for everyone but I really like it. When I launch an electric it's just lacking that Barroom. Sort of like pulling up next to a big Honda while you are on a Harley. Just lacking something.