But the fact remains that you would be paying for 3 loans essentially.  

On these very forums you hear countless stories of "I lost 5K and can't pay for me medical expenses".

The flipper pays 12.5% interest to the lender, and I receive 10% of that.

The house hacking will pay dividends for a long time I’m sure.

Their "Titanium Service" does NOT mean anything, other than they would ask you to pay $10K to sign up for it.

The website does not have an area for me to pay a fee to download the agreement.

The interest rate isn't that huge of a difference between the 15 and 30 so worst case scenario if you have the 30 year option is you start paying it down on a 15 year timeline - sure you'll pay a little more in interest over the 15 years, but it will have been worth it if you bought another house.

Here are five dangerous provisions to watch for in an Operating Agreement:Dangerous Provisions to Watch:Authority to incur debt without investor approvalPower to make loans to other entities/projectsAbility to cross-collateralize with other propertiesPermission to use investor capital for other venturesCommingling of funds across different projectsWhy These Are Potential Ponzi Indicators:• New investor funds could be used to pay existing investors• Project-to-project lending can mask poor performance• Cross-collateralization puts your investment at risk for others' failures• Commingling enables masking of financial problems• Lack of project segregation enables fraudulent schemesProtective Measures to Look For:Strict single-purpose entity requirementsProject-specific bank accountsDebt limitations and investor approval requirementsProhibited related-party lendingClear fund segregation requirementsProfessional Best Practice:Request bank statements showing separate accounts for each project.

I also pay my mortgage for the house I live in.

A good deal for a retail buyer is something they can pay for which has most of the amenities and location they want.