I would invest, and use the monthly revenue to be able to donate my TIME and (in the process, growing) KNOWLEDGE all over the world, with no worries about living or traveling costs (I don't demand much), enjoying the trip, the experience and all the human feedback.
I would never give away my money itself - the benefits to the world and to me would last less and have less impact, let alone it wouldn't be as guaranteed. ;o)
Wealthy Cheers!
Planta.