Any wife that would tell you that your snooping was the reason they are leaving you is gaslighting you and is certainly having an affair.
It doesn't take strength to NOT snoop, it takes strength TO snoop. To nut-up and stare the intel in the eye, take the body blows, and then pick yourself up off the mat and go take charge of your marriage and your life again takes courage and will change you forever -- REGARDLESS of whether or not you save your marriage.
I saved mine, but even if I hadn't, I wouldn't have done it any other way. Not everyone can do it, though.