Why is it shallow if like what you like?

People have always liked what they liked, be it cars, houses, fashion, etc. If you like the design of European cars better than that of US or Asian gars no one will say anything about it. If you like Spanish styled houses over Dutch or Cap Cod style houses, it is OK. If you like more couture fashion more than hip hop wear hardly anyone says a thing, they say to each his/her own likes. However, when it comes to who you like in a romantic or even lustful sense then all of a sudden you are expected to toss out what you like and ignore the visual? If you liked tall, leggy redheads and not short-haired brunettes how is that shallow? If you adore petite Asian women more that tall full-bodied what makes that shallow? If you like guys with ripping muscles and not think spindly guys why can’t you? If you dig bald guys, what is wrong with that? You size up a neighborhood or a home thereof by what it looks like and/or curb appeal. Why are people seeking to penalize others for using the same criteria of someone they hope to spend a great amount of time with?