Thanks for all the replies. Interesting. (Oh, and double posting was to maximise differing perspectives ? just didn't think to link to only one thread at silly o'clock last night .)
Hmm. Well, firstly to clear up a few points of confusion. Ds (who is 2.8 btw, but often confused for a year or more older by strangers) has fantastic people skills and social confidence with pretty much everyone not in the toddler/pre-schooler bracket; that covers, ooh, about 90 different ages, and just slips up on about three . Babies, and kids upwards of about four ? ds is as happy as Larry around.
And in fact, ds isn't even awful around his peers: he already sees four regularly through playdates, and shares well-ish and communicates brilliantly with them a lot of the time. It's just that his worst social behaviour is consistently in the company of toddlers and pre-schoolers. From observing ds and friends on playdates, it seems that they simply reinforce toddler-esque behaviours in each other ? toy grabbing, pushing and shoving, frustration and anger outbursts - while spending time with older children allows more civilised social behaviour to develop spontaneously through modelling. And another thing , empathy is the foundation of sharing, compassion, humanity ? and it's generally thought that kids don't begin to empathise (much) until age three or four. My mum and dad's generation didn't go to pre-school at all, they started school at five. It seems like kids start everything so early now; as though our culture expects two-year-olds (and three-, even four-) to be able to be happy and secure away from their families, to share, to empathise and demonstrate other 'grown-up' behaviours. They're two, fgs!
Hmm.
I checked up on responses stupidly late last night, before going to bed, and tbh was a little disappointed at first. I'd hoped more Home Ed board posters would be a bit more hard core on the socialisation front ; more anti-lumping-kids-the-same-age-together at any age. Sooo relieved to read Runnerbean, Julienoshoes, Humphrey and terramum's posts this morning; I'd thought until then that I clearly must be going mad ...
Runnerbean, yes, ironically, I do feel under peer pressure to send ds to pre-school ... and not only from Mumsnet! We live in a tight-knit village community with its own pre-school and school, and I think for any family to not only not send their child to the local pre-school, but not to any pre-school, would invite a flurry of judgements: over-protective, too soft, molly-coddling, withdrawn, weird, etc. Even if, ideologically, I'm 100% pro unschooling and think it the best thing for ds, of course I wouldn't enjoy being judged in this way by our community. [Why do we live here?! Seemed a good idea at the time ...]
Anyway, for now, I'm thinking it wouldn't do ds any harm to not go to pre-school, providing we still have playdates and get in touch with our local home ed group. However, because he has a place and we're not certain we'll home school, I do think it makes sense, as many of you said, to give it a try in April. If ds doesn't settle, we'll either try again when he's older (3.3 or 3.7), or not at all.
And terramum, please can I have articulation lessons?! I can never communicate that clearly and concisely my views on education.
Thanks, all. And sorry it's so long; lots of posts to reflect on.