Advantages of a NNN lease?

[Jon Deavers]

I've been studying some REIT's business models lately and noticed the term triple net lease. I understand the definition of a NNN but I don't see the advantage to the lessee? It seems that they take on all the expenses of the property without actually owning it. Is that just so the lessee doesn't have to carry the debt or asset on its books and the rent just becomes an operating expense?