Disconnect battery when parked?

Well i feel wierd

the battery gets disconnected while i'm working on the car....
thats it.....

Car sits for the winter in the garage and starts right up in the spring
current battery 6 years old

we have fuses and fuseable link to cover some of the most likley eventualities

surely the fire risk is way greater when running

Granted i don't live in a zone that has earthqukes or extreme weather that might play a part

Dave