I'm disappointed to see Democrats consider this normal.I consider it normal because it
is normal, statistically speaking. See the results of your own poll if you dispute this.
Since (heterosexual) marriage is an equal relationship between a man and a woman, there should be no more reason for a woman to change her name than for a man to change his. This practice absolutely perpetuates inequality. I know some will claim that it is for family unity, but most same-sex couples either don't change names or they combine/hyphenate them.
It's not like women don't have a choice in the matter. And if most women agreed with you, perhaps the share of women keeping their maiden name after marriage wouldn't have declined from 23% in the 90's to just 8% now.