Both my Charvet and Turnbull Sea Island shirts say to machine wash warm.. I always thought that warm water gradually wears down the fabric faster, but is this not the case? When I spoke to one of the guys at the Charvet at Bergdorf Goodman he said it's not so much an issue of ruining the fabric, it's moreso about shrinkage.. I read on here that most of you guys wash only using cold.. so what should I do? If warm water won't affect these particular shirts then I would like to wash on warm, as I do my own laundry and it would definitely help clean tougher dirt buildup.