But really it has no impact on my day to day life at all.
Do you know any girls, Viviennemary? Do you want them to be able to go swimming, take part in residential camps, take part in sports, and still hold on to their privacy and safety? Do you want any of the girls you know to be free to join the Guides if they want to, without the risk of a loss of privacy (at best) or assault and pregnancy (at the worst) when they go for trips away?
Do you want all the groups and posts and scholarships and other spaces that are currently held by and for women, and which help to push for greater participation of women in public life, to be held by trans-identifying men, who don't have the same understanding or experience of women's lives? Do you want it to be OK for women to talk about their bodies, and not be shouted down?
Do you every go to the doctor, or know other women who go to the doctor? Even if you are OK with having a man perform intimate examinations on you, do you think some of the women you know may feel differently?
Do you think you will ever get old, or ill? Do you want to be bathed in hopsital, or in a care home, when you are at your most vulnerable, by a man, without being able to object and ask for a woman?
These are all things which, I would suggest, are part of your every day life.