I would take the offer. My parents had a similar opportunity recently...my Pop was all for it, my Mother was against it for "fear" of what the neighbors might say. She won the battle, needless to say, the three kids are somewhat amazed at how a revenue stream like that was declined. You can help future generations of your family and if you ever sell, the buyer will look at the revenue as a positive.
I would consider them as a conversation piece, every time they rotate just say...there's a penny...there's a penny...
