It's not just opinion, it's all fact.
Obama nearly sank this country into an abyss on the world stage we may have never crawled out of. Our standing in the world became that of Canada, the irrelevance he bestowed upon this once great nation, that when a US President spoke, you had better pay attention was reduced to rubble.
And that was bad for everyone in the world. The free world counts on us. Even with Bush and his Iraq decision at least dictators, bad people that choose to try us knew that in the end Saddam ended up in a dark hole swinging from a neuse, so try us at your own risk.
Trump came in and immediately showed the world what happens when a US president tells you not to use WMD's on civilians. Havn't had a problem with Assad in regard since have we.
And the Korean Rocket Man has stopped testing balistic missles.
liberals can keep whining about all of this small $hit if they'd like. Trump is playing you like the fiddles you are. He's is a master at diversion, the art of the deal.