Women don't really like men opening up to them

I hate to generalize stuff like this but this is something I've noticed across women of different personalities and behaviour. They say that a sensitive guy who can share his feelings without getting passively aggressive is very attractive because it's good thing to say. They want to sound caring and not very shallow. Most of the times they themselves don't know that are being pretentious here. Women prefer people with a mystery in their character. They want unpredictability and uncertainty in every move. Initially, I thought it was the teenagers and early 20s who prefer guys with super bikes and long tattoos etc (common fuckboys) and then settle with someone who is more sensitive and gentle later on but I was proved wrong. I was in a long term relationship where the girl used to ask me 100s of questions about me in the start but once I started sharing things voluntarily, she lost interest in me and my life. It's like she knew I was gonna share anyway, so she took me for granted. I thought it was a one off thing but I have tested this theory for sometime and I've noticed a similar pattern. The moment men start sharing, they are perceived as weak and boring by women. Mind you, I'm not against women here. This is something they themselves are not aware of. It just happens slowly and subconsciously.

Edit 1: To all the people saying I'm wrong in some way or the other, I'll be more than happy to be proven wrong here. It's just something I've observed.