When has the US not been deeply involved in Middle Eastern politics? Since WW2, the US is involved in every region and area of the Middle East and most countries of the world and for good reason. The US can be credited as the major catalyst to the lifestyle improvements throughout the world via US business with the aide (and sometimes hinderance) of the US government.
For all its mistakes, the US has changed the world for a better place. Where do all the countries of the world send their brightest to study? the US.
Although not perfect and still very young, the US is a light to the world.
To answer your question directly: yes, we need to be involved in supporting people and our own national interests as well. If the US were to stop all influence (not possible) the US would create an incredible vacuum that would destabilize the entire world