Most cisgendered women will say we are lucky not to experience periods - but would most of them wish to have no womb and be unable to bear children, and have to take estrogen tablets for the rest of their lives? I doubt it.
It does upset me too, but I knew from a long while ago that being unable to have children would be one sacrifice I would make for transition. I have sperm stored, although I am not a lesbian, but there may be one way to find a surrogate mother. It may not be the best way but at least a chance of my a child from my genes may be possibly born. In some ways I feel guilty or inferior that I can't give my future partner children in the same way that most women can, but there are other women in my position, and with true love, my partner will find a way around it, rather than reject me.