Presidents picking laws to enforce

Why do we allow our Presidents to pick and choose which laws to inforce and which ones to ignore?
Seems silly to me that Congress passes laws and then the President gets to pick which laws to enforce. The excuse of limited resources is just that an excuse. “Article 2” of the Constitution defines what powers and obligations the President of the USA has. Section 3 of Article 2 he shall take Care that the Laws be faithfully executed, and shall Commission all the Officers of the United States.”

Nothing in there says he can pick and choose which laws to enforce.