one of my kids is still napping, the other is dropping his nap. they are going to be 2 in january.
the one who is dropping it just simply refuses to go down. and he used to take like 1.5hr - 2hr naps no problem. a couple of weeks ago he just started to refuse. i think he still needs it though... he crashes out for a catnap usually around 4 (in the car, or on his beanbag chair or something). but you can't force someone to go to sleep, so it is what it is. he is definitely more high-strung of the two, for what it's worth. the other guy is really mellow.
they both sleep about the same amount of time at night, from 8ish to 7ish, and have been STTN since weaning at 15mos.