Valid points, but here is a tidbit just for informational purposes.
What many dentists do to put up collateral for loans on big purchases like a practice that can exceed 500g is to sign over their life insurance policy to the lender. It is a common practice I just read about it recently in a dental journal. Those are big loans and most people do not have the net worth to get it, so you sign over your insurance policy. Once the loan is payed off over the time period, say 7 years, you get your policy signed back over to your spouse/sig other, etc.