People can live how they want, and be who/what they want, no problem. But EVERYONE needs to be kept safe.
I know there's so much debate about who can and can't use women's bathrooms or changing facilities etc - my university solved that by having a corridor with toilets leading off it, and each individual room had a toilet, sink and hand dryer. Anyone could use them, nobody was at risk of being in there with anyone else. Similar can work perfectly well with changing rooms in shops etc.
The problem is, we're being asked to accept change, without everything changing to accommodate it. Transpeople exist, cool. Obviously they always have, but there is more openness now. As there should be. But the infrastructure hasn't been changed to keep up with the times.
Every single person should be allowed to get changed, use the bathroom, and whatever else, and feel safe while doing so. Debates like this end up turning people against each other, and against groups, while in fact it's businesses and the government who are causing issues by not making proper provision for all groups of people.
An increase of tolerance and acceptance and rights for the trans community must come, but should not come at the cost of women's safety. But it doesn't have to. The right change is possible - if the people who have the power can be arsed to do it.