Isn't using cash for keys just passing the problem on to our fellow real estate investors who may now take on a tenant with no eviction record who otherwise would have a record thus alerting the criminal nature of these tenants to the home owners due to an eviction now being on their record?

Using a quasi-natural experiment in which investors purchased pre-packaged home portfolios, we find that average properties located within 0.25 miles of bulk-sold properties sell for $3,323.25 higher than homes located farther away.

Either you park your cash feeling that having paid off properties producing very little CoC is adequate or you invest with the approach that cash must earn it's keep and be used to generate more cash flow and greater appreciation potential in multiple properties.It should never be a question of what should you do, it is a question of what do you want to do.  

For Morris to protest he didn't know what was happening now...it's a classic Big Lie....in the big lie there is always a certain force of credibility; because the broad masses of a nation are always more easily corrupted in the deeper strata of their emotional nature than consciously or voluntarily; and thus in the primitive simplicity of their minds they more readily fall victims to the big lie than the small lie, since they themselves often tell small lies in little matters but would be ashamed to resort to large-scale falsehoods.Adolf Hitler

Obviously interest would be more naturally on 10 years..

I am pretty conservative by nature and definitely won't over-leverage.

I think it's around the price of natural stone.  

I think you should jump into real estate sales and try everything that is in the sales side, then you will naturally and passionately be pulled towards the area you are the best in.3. 

For this refinance transaction, the borrower(s) must meet Fannie Mae’s borrower eligibility requirements as described in B2-2-01, General Borrower Eligibility RequirementsThe borrower(s) may have initially purchased the property as one of the following: a natural person; an eligible inter vivos revocable trust, when the borrower is both the individual establishing the trust and the beneficiary of the trust; an eligible land trust when the borrower is the beneficiary of the land trust; or an LLC or partnership in which the borrower(s) have an individual or joint ownership of 100%.  

I might only make 1/4 or 1/5 the $ for each house, compared to what I might make flipping, but I can find way more than 4 or 5 of these for every person who would sell at a price adequate for flipping.