I think that is it - don't even try to understand, just accept that this is his way.
A few centuries ago, men were peacocks - Tudor and Stewart men wore silks and satins, brocade waistcoats with gold and silver thread embroidery, embroidered kid gloves, lace ruffles at the neck,heavy gold chains around their necks, diamonds hanging from their ears and embellishing the pins in their hats, and they lathered on exotic perfumes. If you could afford it, you went to town. These were not the feminised fobs their appearance might suggest - they were randy and macho, and carried swords which they knew how to use!
In the Georgian era, they still dressed to kill. It was only in Victoria's day, when puritanical Prince Albert set the one for more reserved and formal dressing, that the norm for men became as it was in the 20th Century. Don't forget that even Albert himself was less conventional in his body jewellery than you would suspect from his black-white-and-grey clothing. We have had an era of sober mainstream wear for men. It seems that is over and we are returning to older habits.