That's how I feel.
Sure, 2014 was great but don't act like it needs a masterclass by the coach to create a very good team when the vast majority of your team consists of Bayern and Dortmund players, that faced each other one year before in the CL final.
If he would've stepped down after 2018 most would have kept him in good memories I think. But the last 3 years were abysmal, from the results, the way we played and how he acted (how he basically declared the national careers of Hummels, Boateng and Müller to be over, or how stubborn he was in this tournament and didn't let the the team play the way the wanted to)
When I think of 2014 I think of the 7:1, I think of Klose, of Schweinsteiger in the final, I think of Neuer against Algeria. But I certainly think about Löw.
I'm just glad this chapter is closed now and I'm looking forward to what Flick is able to do with the team.
2014 was not that easy, we were without arguably the best German player at that time, Marco Reus, while also missing Gundogan, Lars/Sven Bender and most importantly were without a proper left back, with Howedes playing there for all of the tournament despite never playing there in his club career. Of course, it was still an absolutely stelar squad of players but there were numerous injury problems he had to deal with throughout the tournament.
Even if you want to discount 2014, you can't discount how well he did to take the German team to the 2008 final. It was a team in transition between the young and the old with players like Ballack, Frings, Metzelder, Lehmann not being as good as they were in 2006 and the younger players not being fully integrated into the team yet. We were great even during those years too.
Then you have the full transformation in 2010, who can say that performance against Argentina was not one of the best performances ever by the German national team? It was an Argentina team full of attacking talent yet they were expertly disected by Low and the team.
We tend to forget he did a really good job keeping Germany at the top even before the generation of Schweinsteiger, Lahm Ozil, Neuer, Khedira, Boateng, Hummels etc reached their peak.