Bit late to the party, possibly due to my intrinsic Gothic insecurity and need for attention 
but it's an interesting conversation.
I'm 52 and fully embraced my Gothness at 42 having escaped a hideous 14 year marriage to a biker...... I was brought up to dress "smartly" but never had any agency over my clothes as my dear departed Mum reasoned if she was paying for my clothes, she had the right to choose them. My first summer job paypacket went on a range of Bananarama inspired items from Chelsea Girl's bargain basement because although I hankered after Goth it would have been verboten by dear Mama. I was an only child and didn't dare rebel.
I then ended up on a drama school tech course specialising in design and cycled through a variety of looks; I remember at one point realising that Laurence Llewllyn Bowen had obviously nicked my signature look of leather trousers, man's white dress shirt with floppy cuffs and flamboyant waistcoat.
During my marriage in amongst the biker gear I tried Yummy Mummy and Boho, but always gravitated back to the Dark Side 
.
My current DP of ten years is full on Goth and the same age as me, he is also a body piercer of 30 years standing - no I don't clank when I walk, I only have my ears and nose pierced, and he only has three holes in each ear all modestly stretched to a degree.
We love dressing up, we have done live performance in a variety of styles, and if we reverted to "normie" dressing peopl would assume something was very wrong lol. We pretty much forget we look a bit eccentric, and are often pleasantly surprised by compliments, even from strangers. Our friends run the gamut from mainstream to completely out there, and it bothers us not one jot what they wear. I find it so sad when women say to me "Oh i wish I could get away with wearing what you do but I'm too old / fat / have kids" in a wistful way, and will try to encourage them to experiment, if not every day, just once in a while for the fun of it.
I have worked in call centres and doing admin, and corporate Goth is an actual style. Dress down Fridays for me became an occasion when I was actively encouraged to dress up proper Goth, and my range of corsets was much admired by my managers.
These days I have an alternative shop, so my look is part of that, and it has evolved into a bit of a Gothic / witchy / Peaky Blinders mash up. Velvet is my weakness. Dressing Goth needn't be expensive, pretty much everything I own comes from charity shops and car boots. If it's black and has nice detailing, it can be worked in with the right accessories. I do dark heavy eyes and red lipstick and my hair is now waist length - have stopped dying it black and am working on letting the grey flourish, which is giving me a great two tone look. I sometimes wear black and red or black white and grey woolen dreads, and have tried undercuts and various colours because I can - I couldn't do it in my teens so am making up for lost time because I can. I love hats too.
I have only had one negative experience when a charmingly beige attired older lady hissed witch at me in the street, but i simply said a cheery "Blessed be" and had a good chuckle.
It may sound as though I'm a bit obsessive, but as another poster mentioned, there is an element of laziness involved as I can sort of roll through a pile of black clothes and look relatively co-ordinated with minimal effort.
The Sophie Lancaster story is utterly tragic and a sad indictment of how obsession with other people's appearance does lead to judgement and can have terrible consequences. My motto is live and let live - I will judge bad behaviour, but not how someone looks. If we all looked the same, how drab and dreary the world would be.
Oh, and on Youtube, those interested in vintage and cottage core etc might like Rachel Maksy - she's very funny and all about the clothes and costume - saved a small portion of my sanity during this lockdown for sure!
We need fun more than ever at the moment, so why shouldn't it come from dressing up???