In some situations I think it's a no-brainer, in some cases I would advise against it, and other times it's a bit of a toss-up.

Get a no income verification loan for the bulk of the financing on your upcoming purchases until you can qualify for a Fannie Mae type loan.Best of LuckStephanie

We established a NO pet policy many years ago and recently a tenant secured a Service dog because of a trauma she suffered.

Because I bought my current home using a No Income Verification loan, and it was relatively easy. 

Anything above 20% cash on cash return is a no-brainer.

Fannie Mae and Freddie both allow you to refi for your cash purchase price and accusation funds before 6 months....this is no financing on the subject property.You can do a no cash out refi (pay off existing loans) after 4 months using a new appraisal.You can do a cash out refi after 6 months, going off the new appraisal.Talk to local brokers who also invest and they can find lenders that will fund these loans.

It is a no cause non-renewal and I think you can do it for most states.  

I have a unit for rent and I have a no pet policy.One applicant called and said she has one of those really small dogs - you know, those they put in purses that looks more like a skinny rat?

Seems like a no brainer to me...

There is just so many things that you can do with real estate that to me its a no brainer.