Too much purrell

So 5 kids in my nephew's class - out of like 16 - have food alergies - and I think it's because kids are too clean these days. No seriously - everyone is over zealous on germs. We purrell everything. Clorox counters. Shower daily. Never touch farm animals. I think that's why our immune systems are shot to hell and as a result our kids suffer and can't get within 10 yards of a peanut. I think we are creating a HUGE problem for the next generation by being crazy phobic on germs. What do you think?