Well you are small arent you, but then again she did marry you!
I think men with small dicks, though i am not one of them can and do counter this in other ways.
One of my cuckoldresses long term lovers was not quite as small as you but was into BDSM and tactile touching and mental stimulation and seduction, over the years he had learnt the art of how to bring a female to multi uncontrollable orgasms without removing his pants.
He was a skilled user of electrobes and other objects mixed with tying a women in rope, restraining her and skillful spanking.
So a big dick isnt always what turns them on, nor is it something that took my cuckoldress back to him time and time again. My dick a lot bigger than his yet remained sat locked in a cage encased in female knickers, often wearing at her hand a pair of suspenders too and over them a pair of tight female jeans as he pleasured her.
As he used to say:
its not what youve got, its how you use it.....
Give a man a wand, but it doesnt make him a magician....
She had a lover with a 10"+ cock and the truth is he filled her, but did he satisfy her, NO. She found him lacking in emotion and he didnt gave her the mental connection and stimulation she needed. She wanted to try him a few times but didnt find the experience as fullfilling so sacked him.