hyacinth, I think there's a massive difference between junk food vegetarians (pasta, cheese, diet coke, chocolate) and wholefood vegetarians. if you are the latter it's certainly easy to eat healthily. well, i think so anyway.
I became a veggie about the time I started practicing yoga more seriously, which is also when I fell pg and completely went off meat. the smell made me want to vom, I just couldn't have eaten it. once my daughter was born I was feeling pretty fab on a wholefood veggie diet so just never went back to meat.
recently I've had fish a few times, so am obv not a strict veggie, but only about three times in the last six months. I've also recently switched cows milk for soy/oat/almond milk and can't remember the last time I had any cheese but haven't specifically avoided it - i just seem to have lost the taste / need for it somehow? weird.
I guess I could always take or leave meat but my family did think it odd when I stopped altogether, however they've accepted it now. I only cook veggie / vegan at home, and occasionally MrF gets a caveman urge and goes to buy half a cow / a rack of ribs / a whole chicken and eats the lots over two days
. which is prob much more how our diets used to be - mostly veg, pulses etc, meat when available.