When he fell asleep on the living room floor at five 'o clock we thought: "How cute! He really tired himself out today!"
When he fell asleep on the couch (maybe half an hour after waking up on the living room floor) we thought: "He must not be feeling well."
When all we could do to keep him happy was let him lay in our bed, in our air-conditioned room, watching Sesame Street videos on my work laptop, we thought: "Poor little guy ... It's going to be a long night!"
But that's what parenting is all about.
I wouldn't want it any other way.