Well each to his/her own...
I'm happy to see the demise of the patriarchal-constructed myth of 'purity' where the unblemished commodity - the bride - is handed over from one man to another whilst both may well have exercised their 'right' to sow wild oats with women who will then be regarded as shop-soiled; not really the kind of women men want to marry, no - these men are entitled to a virgin. Ugh, the hypocrisy!
Let the white dress become a symbol for a new-start, a fresh-page, at the beginning of a new life for a couple.
Eons ago I heard this tale of a debate between two men who were discussing Godliness whilst driving home together one late evening; the driver likened it to 'cleanliness' and abstinence from the sins-of-the-flesh, the other to the purity of a soul determined to 'do-unto-others etc'. Stopping at traffic lights, they both watched as the local prostitute, weary and exhausted, grabbed hold of a very fragile and doddery old man with a heavy bag of shopping dragging him sideways, attempted to cross the road. Holding on to him tightly and carrying his shopping bag, she guided him across it. The passenger pointed to the woman and said to his friend, "there goes God".
There's variations of this parable, but the point is the same.