There can be more than one reason for militaristic action, a financial incentive as well as humanitarian just makes it feasible and moral. Many of the refineries in the southern US were geared towards Venezuelan oil refining and had been running for a long time before Maduro got into office and obliterated the numbers of barrels being produced in the country.

This meant the economy of Venezuela suffered, inflation soared, and families that were making 2-4k per month now were making less than half of that. If all the US gets out of the return of a democratically elected government in Venezuela is normalized petrochemical trade then all the better for both economies.

We're also ignoring the fact that by appropriating those petrochemicals going to Russia, we've kneecapped Putin's efforts in Ukraine. A large portion of the oil imported into Russia comes from Venezuela. They have a good amount of Russian production but it's certainly not inconsequential to the war effort that this trade has been shut down by the US. This incentivizes the end of Russian aggression and for Putin to back off.