So how long are you willing to put your one and only life on hold waiting for him to be the person you want him to be rather than the person he actually is?
If you say to yourself "If he hasn't found full-time employment in 3 months, then I will divorce," you give yourself 3 months of freedom from the daily "what's he doing, where's he posting, who's he calling" nightmare. You get to wake up everyday for 3 months and NOT think about whether or not he is employed!
Wisely put.
This decision rests with you, justaboutus. You already have enough data to make it.
Whether he chooses to grow up and work or not is his decision, and his alone.
Whether you want to remain in a marriage with someone this irresponsible is yours.
You may want to stop handing that decision to him, and make it yourself.