Strewth, that's a bit strong.....I think my husband has the same tendencies. Our two motorbikes live in our garden shed and are much prized. One is a gleaming 17 year old custom Chopper which looks like it's just come out of the showroom, the other, a 1959 Panther which was bought as a barn wreck and has been lovingly restored by my husband.
We had three break ins, one of which, the thieves actually managed to get the Panther out of the shed...thankfully, neighbours disturbed them. Ken says they wouldn't have been able to kick it off, that isn't the point though. After that episode, he wanted to wire the shed door to the mains!!!

He was quite keen on that idea until I pointed out that I might forget about it....I know I like to straighten my hair but not in that fashion!
Instead, he rebuilt the entrance, removing the doors completely, welding in metal frames which hold a single wooden "door", that has to be man-handled in or out, and bolted from the inside. There is also a system of metal bars behind this, welded to the frame, so if they managed to get in via the "normal" door, they would have to make a lot of noise and expend a lot of effort to get in and still not be able to get the bikes out. The normal door is like Fort Knox too. It's a hell of a performance when we want to go out on the bike but at least, there is the security in knowing the beloved bikes are safe. We also have a baby monitor inside the shed and the receiver in our bedroom, which has earned it's keep when alerting us to prowlers...even if it was only a mouse on one occasion!
It saddens me that we have to go to such levels to protect our property and it is no wonder some people are driven to such extreme measures.
To think, it's only a matter of forty years ago, that folk could leave doors and windows unlocked, with no fear of thieves.
Cheers.