Stumbled across this discussion and just joined especially to post...
I'm a pad seller. For those who were asking, it's perfectly fine to wash most pads at 40 or 60 if the washing instructions say you can (usually to do with what temperature the fabrics are pre-shrunk to). I wash mine at 60 all the time. I generally cold-rinse first which helps to avoid staining, and I also treat stains with vanish. It's also fine to use something like Dettol in the washing machine if you're worried about bacteria growth.
The rest of this post is really to MaddieMookinsMum, whose post made me laugh - nobody's forcing you to use them if you don't want to, but do you tell your daughter never to wear a swimming costume, because your grandmother has told you how awful they once were? Swimming costumes used to be made of wool, back in the day. They weighed pounds when wet, and had to be put through a mangle after use to wring them out. I recently read an old school story that referred to characters having to do this after a school swimming lesson. Fabric technology has made huge strides since then, and this is not a good reason to refuse to use a swimming costume.
(Disclaimer: I am not attempting to force anybody to use a swimming costume if they don't want to.)
But seriously, I had hellish periods when I was a teenager (undiagnosed and severe endometriosis). I really wish that I had had decent cloth pads then, because they make my life so much easier. To answer your question, I do know how lucky I am, because I once had to manage a serious medical condition without them, and at far too young an age. This is not 'only on MN' - I'm not a Mumsnetter, and am a little surprised if you think that only Mumsnetters ever end up with problems like mine that cloth pads help to manage. There are also teenagers who are keen users, such as Bree of Precious Stars Pads is one such.
I reckon demand is growing. In the past 4 weeks, I've sent pads to Italy, Spain and the US as well as within Britain. It astonishes me to think that anyone feels that these women are somehow not 'free'. Use them or don't use them, but let's get beyond that level of debate.
I'm happy to answer any questions about use/care of pads, but I think most have been covered already.