"...Should every person that wasn’t born here stay out of Portland and the rest of Oregon so that you can keep your pristine childhood memories?..."

Ever read the 'Ugly American' or studied the theories behind culture shock?  You can choose to have your 'opinions' of long-time Portlanders, but you are merging into the 'ugly Oregonian'  when you appear to preach to many who have welcomed you.  Might be a symptom of culture shock; or you may just have that 'superior' attitude because you really don't want to assimilate the culture...but create your own.