With little exception, there is no "right" or "entitlement" to any tartan. If wearing a tartan you feel a connection to makes wearing a kilt easier than by all means make that your tartan rule, as others have done. There's nothing wrong deciding what symbolism your tartan represents either. No one is telling you that your wanting to connect with your heritage/clan is wrong, and no one should be telling the "I like the way it looks" crowd that they're wrong either.

Tartan was fashion before it was given any clan symbolism. The tartans, for the most part are owned by the mills, who are in the business of weaving, not clan indexing. A mill sells a lot more of each tartan by selling to anyone wanting the tartan, not just clan members. Yeah, economics plays a part in this debate too. This is why there are no "rights" or "entitlements" to tartan. Why would a mill limit who it could sell one of it's products to?