We don't have wolves because of the rancher and hunter lobby. The majority of the public in Colorado supports wolf reintroduction.
Fortunately, this is going to change, whether they want it or not: the wolves travel large distances and have already appeared in Colorado. I would not be surprised if somebody would actually transfer or release some sanctuary animals. The Wind Rivers has wolves, then it's 100-150 miles to Snowy Range and then the Front Range is right there. Just give it time and protection.