@Chad Hovermale
This is a common question we hear all the time. Comparing real estate investing with your IRA to real estate investing with personal funds is comparing apples to oranges. The better comparison is investing in real estate (or related non-traditional assets such as notes, tax liens, etc) as compared investing in the stock market.
The IRA is what it is, and in exchange for beneficial tax treatment comes with some restrictions. You don't run into those restrictions in the stock market simply because it is arm's length by the very nature of being publicly traded. If you can have better principal security by investing in real assets, and produce solid, consistent returns investing in real estate, that might be better than sending those Roth funds off to Wall Street.
While you cannot quite get to the point of using a non-recourse mortgage with this current deal, a self-directed IRA does allow you to leverage with a mortgage - not something you can do with an IRA invested in traditional stocks. If you can use other people's money to invest your IRA in real estate, you can achieve a higher, leveraged cash-on-cash return. There is some tax exposure in the form of UDFI that goes along with this, but your return will still be superior to an all cash purchase.
So, can it make sense to invest a Roth IRA in real estate? Absolutely.