First of all, Obama cares about the environment. He signed the Paris Climate Accord. America experienced a scandal-free eight years of peace, economic growth, and global respect under President Barack Obama, unlike what is being demonstrated by Donald Trump. Obama was able to maintain respect for integrity. The Trump presidency has been tainted by lies, greed, ethical transgressions, and criminal charges.
Also, Trump has refused to divest his business holdings and relishes using his presidency to enhance them. Obama was a good president because as the leader of the free world, he understood the United States could only work as a whole if everyone has the same opportunities in healthcare, education, and employment.