Sure, the world definitely shouldn’t be so dependent on oil, but so long as we are, protecting its free flow at reasonable prices is vital. Most of America’s post-World War II recessions were triggered by oil price shocks. Many non-American approaches have been tried for protecting the oil flow, such as relying on Arab countries in the Persian Gulf; drawing on Egypt’s and Syria’s military muscle; or depending more on European forces. None have worked.
No other country or group of countries has the will and capability to do this job. For instance, were it not for US-led action in evicting Iraqi forces from Kuwait in 1991, Iraq would still be in Kuwait and quite possibly Saudi Arabia, disrupting the production and flow of oil in the region.