hello!
i kind of didn't realise i was a feminist until i had a daughter (who is now 22 months) and discovered mumsnet. which was kind of at the same time.i guess it kind of made me "see" things i didnt see before iyswim. i am aware that will probably sound stupid so please be gentle with me :)
basically i want to raise both my DC (i have a DS as well, 4) to see men and women as equal. particularly in the household and where childcare is concerned.
i was brought up by my mum and dad who are fab but i have realised that through my upbringing i was conditioned to see the woman's role as to basically do EVERYTHING. my poor mum cooked, cleaned, did absolutely everything for me and my brother while holding down a full time stressful job. my dad also worked full time but he did absolutely nothing around the house whatsoever, came and went as he pleased (as in going out with friends, having hobbies eg golf) whereas my mum was basically tied to the home and us children when she wasn't working. she barely had a life of her own. i saw my mum doing everything and just assumed it was the norm. and ok. in fact i was as demanding to her as everyone else in the house was, expecting her to do everything for me, a fact which i am now ashamed of and wish i could go back and change :(
i found myself repeating this pattern with my first DH who i moved in with at 19, i worked full time as did he yet i did everything for him, cooked cleaned etc, and felt grateful if he so much as rinsed a tea cup 
. he was also a sexist pig and his attitude re women was that they were there to look sexy and to have sex with and nothing else. he was a lovely man (not). however a few years down the line DS came alond and it took realising he wouldn't lift a finger to help his wife with his own baby that it was not acceptable any more (i'm ashamed it took me that long tbh, but if it hadnt, i wouldnt have DS) and we split up.
now i am with a new DH :) who is DD's dad and he is far more enlightened than exDH and has a lot better attitude towards women and sees me as a person and not just some sort of sex object. he is also great with the DC does a lot more round the house, but still perhaps not quite enough IMO.
so anyway i want to break the cycle that i grew up with, i want my DC to grow up with a healthier view of male/female roles than i did. and for me, that is the main reason that i am a feminist :)
i hope that i don't sound stupid 
and sorry for long post but i do feel strongly about this stuff. i am in awe of some of the intelligent feminist ladies who post on here and i hope to learn a lot from you all.