Size matters for women too.

Speaking to the hypothetical anon I can almost guarantee you that the moment you touched some supposed mega rack in the process of cheating the illusion would dispel and you'd be left with something you didn't want. That thing would be a hollow, ("this isn't what I imagined- the dopamine has faded, what am I even getting out of this,") and bitter feeling; because you are, at heart, probably a good person and someone who loves his wife you would quickly find that for every bit of love you have for your wife it would turn into a serrating guilt- the more you love your wife the worse you will feel. Worse still, you will have accrued this for nothing- the cheating will be, by it's very nature, ephemeral and whatever thrill you got out of it will evaporate almost instantly. You will loathe yourself in the absence of your lust as you are left to carry the bag for your actions with nothing to show for it. You will then be stuck with the quagmire of either carrying that guilt around and constructing a lie to accommodate it, (which I seriously doubt you have the mettle to handle without collapsing/confessing anyways,) or confessing to relieve the painful guilt only to then face whatever marital implosion you will have wrought. Control your horny. Express it in some way or otherwise trust it will pass eventually but definitely don't torpedo your marriage for it. If you are feeling sexually imbalanced to your wife that's a whole other issue that needs a lot of work but it definitely shouldn't be seen as a pretext to make a flatly regarded mistake.