Have NOT had a mortgage or any debt since.One of my wife's colleagues at the time intimated that his REI was making him more money than his medical practice & our veterinarian spends more time talking to me about his REI than conducting the dogs medical.

To meet minimum living expenses (food, housing, clothing, basic transportation, and medical care) in my town of Springfield, MO, you would need around $2,000 / month ($24,000 / year) income. 

Has anyone encountered this before and is it considered discrimination to charge a pet fee to one roommate and not the other if one if for medical reason and the other is just to have a pet?

The main reason I do not have that license anymore and do not do construction is because of some medical problems I had that made me bedridden. 

Even if you haven't or don't plan to form an LLC, it's not a bad idea to notarize your contract/operating agreement to spell out "if this happens, we do this" for every conceivable potentiality regarding the property and each other - particularly with regards to if one of you wants to sell and the other doesn't, or if one of you ceases, even temporarily, being able to meet your obligations to the property for any reason at all.Just a few of the things off the top of my head from one of my contracts:Noting which parties contributed how much towards capital.Establishing right of first refusal in the event of one party wishing to sell.Where bank accounts, credit cards etc are held, and who can do what with them.Cash flow protocol (all rental income goes into X account, $Y each money gets autotransferred to savings, $Z each month is put towards maintenance, etc).Disbursements of surplus money in X account can only be made if certain conditions are met.Explicit recognition that all bills may only have one party's name but are a shared responsibility between or across partners.What items require unanimous consent to proceed from partners?

There were no relatives and whatever he got was going to pay for his medical.

I'll make the analogy again about Doctors-- They all go to medical school, but you don't go to a podiatrist for brain surgery.

You never cease to...well you never cease.

Medical students or nurses or similar would also be an option.

Property tax ~$2,000/yr.The property is located in an area close to a college/medical school and 2 hospitals so I don't foresee any future problems renting it out.