I associate pink, first and foremost, with silly little girls and outdated prejudices that girls, even from before birth, should be showered with pink (in contrast with boys, who must be subjected to blue). I think that the color pink, more than any other color, holds women and men back from achieving true equality. Pink is not a strong color on the color spectrum, and it is often represented as a pastel or other light shade, thereby further weakening its already tenuous position. It is virtually indiscernible in the rainbow and is not listed as a primary color in it (red, orange, yellow, green, blue, violet). It is generally much less acceptable for a man to wear clothing in any shade of pink, let alone a strong shade. Perhaps a pastel pink dress shirt under a smart suit is about as acceptable as it gets for men even in the 21st century. What is unacceptable for men to wear should be unacceptable for women to wear, or vice versa, if true equality of the various genders is the goal. Pink is a commonly sought color in flowers, which are delicate, dying from the minute they bloom or are picked, and generally fragile: all things that should not be associated with people who wish to be seen and treated as strong.
So, to me, pink is a very diminutive, feminine, dismissive, weak color, regardless of its shade (dark or light or pastel) or use. Note that the word "feminine" had to appear in that list of negative attributes, unfortunately.
Pink is also the color of the ribbon and campaign against breast cancer, of course, which is almost completely associated with women, much to my dismay. While I support breast cancer research and cures, I do not support the use of pink to convey that effort.
I do occasionally and judiciously and consciously wear the color pink, but typically limit it to an accent piece (jewelry, a scarf) to tone down an otherwise very strong outfit. However, I wear it with caution and consciousness of the subconscious meanings it conveys to most people: silly little girls and breast cancer.