I also think it's unhealthy to put women in boxes and preach that only some lifestyle choices are worthwhile for us.
Maybe you should be saying that to all the people who view women as baby making factories and that their role is to raise children...
I'm inferring from your comment you think that is what some of the comments have done i.e. been preachy, put women in boxes and decided what is a worthy lifestyle choice, I don't think any of the posts did (although I feel your post certainly had a distinct whiff of 'preach' and admonishment).
But, seeing as this is a CF site, I think it's pretty evident that the choice to be a SAHM has most definitely not been seen as a worthwhile choice for the site's female members. I also think, owing to the nature of this forum, it's not unreasonable to expect a dim view to be taken of the women who vocally martyr themselves on the cross of motherhood as though they've been forced into it.
If someone wants to stay at home and raise kids, whether that's at the taxpayer or the partner's expense, then have it...just don't expect to be hero worshipped for something you chose to do and especially when someone else is picking up the tab for that choice.