I want to trade someone else's money for my financial gain.But that still doesn't provide a concrete example concerning how you can make someone else pay your "bad" debt at least to the extent that it makes it worthwhile, other than if it doesn't affect your DTI or else somehow doesn't affect your ability to obtain more funds for RE investing.  

Additionally, if you could let us know why you find each of them worthwhile, that would be great!

I for one think fighting for FREEDOM is worthwhile.

I'd be interested to see what you do both investing in places in Detroit and if you feel it's worthwhile to unlock your SD equity and put it to work in Detroit. 

I pay 1 month rent for this service and find it very worth while. 

(Or you can read my BP blog where I summarize some of the court cases.)Figuring all this out is worthwhile, and I salute you for the asking the questions.

Going into a deal knowing that you will lose money even if you do not incur additional expenses is not worthwhile.

If you are selling 1000 homes and they are all above the medium price point in your area then this would be a worthwhile anecdote.  

I've seen wholesalers screw up more deals than they have come through with something worthwhile.

I think it would be worthwhile to use a paid service if you live in another state maybe and want someone to come deal with issues, or if you have hundreds of properties and managing them isn't your full time job.