As the primary breeding male for all three Sea World parks, Tillikum is a very valuable asset to Sea World, as captures of orcas in the wild have virtually been stopped and the population of captive orcas has been going down in recent years.
Tillikum should not be euthanized or punished for behaviors brought about from confinement by humans; and after 27 years of captivity he should be given the chance to retire to an ocean sea pen in his home waters of Iceland to live out the rest of his life.
http://www.orcanetwork.org/news/tillikumnewsrelease.html