Have to agree with that logic.
My uncle put it best... if the deposit isn't punitive enough, there is no incentive to bring it back. Whoever thought $30 was punitive enough of a deposit on kegs, obviously never actually bought a keg. Thank god MI finally changed their deposit to $30, so there is at least a little more compensation on missing kegs (versus $10), but it still is ridiculous.
With my background, I am uncomfortable taking a keg for $30, but with the available channels I have, I don't have to either. I do have keggles, but mine were provided by the brewery I used to work for, with their knowledge. The kegs had botched welds on the tops.