I've been known to stick pens in my pocket at work and forget about them till after I got home. Not intentional, but I've done it. That's a far cry from hitting on someone else's wife. One's a sin of omission and the other of commission.
I agree that the statistics have (on average) infidelity running from about 30% to 70%. That leaves plenty of room for some NOT to have committed that particular sin.
However, there are 10 (at least) commandments. That leaves 9 to stumble on.
I think the numbers on theft are far higher.
Coveting is probably universal, BUT, it, too, is one of the commandments.