Your lens and body are if anything LESS susceptible to damage separated, since torque upon impact would be reduced and since you would probably only drop one if anything not both. Don't do freelensing next to a guy using a leafblower and you'll be fine...
The electrical contacts thing sounds bizarre. Tape residue is way more likely to damage your connection than.... what exactly? Air? I've gorilla glued a lens to plywood and later chiseled it off again with a pocket knife and a mallet, and the contacts still work.
Bottom line: your gear is not a special fragile snowflake. It is incredibly resilient and if you dont trust that, you're going to miss a lot of photos.