DD will usually go to sleep between 8-12, then get up from 7-10, but not really relating to the time she goes to bed, and then have 2-3 naps from 15 mins-2hours during the day, at completely random times. She'll usually breastfeed about once an hour (not long most feeds) so if she's closing her eyes I'll get her to nap, and if not she'll be off playing again.
If I try getting her to sleep before she wants to go she will just roll about/chatter/scream for literally hours and will end up going to sleep the same time she probably would have anyway, and I find it easier not having to fit groups/going out around set nap times go avoid her getting grumpy like lots of friends seem to do.
AIBU/lazy to not get her into a routine, my DM is constantly commenting on how I'm 'letting her rule the house and spoiling her for life' etc but I can't see the problem when its working fine for us both. (And DM has something to say about most parenting choices!)