Going with the flow has a very respectable pedigree. Whether you look to Taoism's 'doing without doing' or to the Greco-Roman Stoic Philosophers of a few centuries BCE, you'll find plenty of support for taking the path of least resistance through life. It's certainly the 'low-fuss' way to go.
As an American transplanted to London, I have been starting to think that 'go with the flow' is more an English tendency than an American one. As far as I can tell, for many English folks - especially middle class ones - the highest priority at all times is to avoid making a fuss. If I get punched in the jaw in London, I am likely to blurt out an embarrassed "sorry" - presumably because my face was in the wrong place and got in the way of someone's fist.
In the US, an incompetent employee is fired. In England, well, we don't like to make a fuss, do we? We find a way around it. Nothing could be important enough to justify the awkwardness of a confrontation [with the very notable exception of debates in Parliament, which I still do not understand to even the slightest extent.]
There is a lot in the 'go with the flow' approach that is laudable. Fewer rage-related killings would probably be a good place to start! Also, I know I am going to be a lot happier if I can frame the fact that the bus driver just drove off laughing, leaving me wet and panting on the pavement, as a wonderful opportunity for exercise and just the way it is rather than a cause for seething fury an visions of vengeance. Of course, a lot of unexpressed anger probably accounts for the enormous consumption of alcohol by the English, but this is a different matter...
There is also a big problem with going with the flow. The flow is all too often in the wrong direction. The flow may be away from our vision of how the world could and should be and against what is best for each of us. The flow is leading us toward selfishness. The flow is leading us toward a lonely detached kind of fierce individualism. The flow is leading us toward environmental catastrophe. The flow is leading us toward an increasing separation between the rich and the poor.
Martin Luther King, Jr. said "...there are some things within our social order to which I am proud to be maladjusted." He was reminding us that we can get accustomed to injustice and inequality. We can contribute to the negative things in our world just by 'going with the flow'.
Close to home, I have watched 'going with the flow' allow the decline of the Unitarian movement to continue unabated. Rather than call people out for their incompetence or deliberate obstructionism, we try to be nice and polite. We seem to prefer letting the whole movement suffer rather than upsetting one person or a few individuals.
I have seen bureaucrats willfully neglect their duties and damage or even destroy lives - and this is tolerated because we don't want to make a fuss.
In parliament, we have seen progress on same-sex religious partnership blocked because the bishops in the House of Lords insist that to make changes will make life difficult for some C of E vicars. Forget the millions of BGLT people - don't want to make a fuss for the vicars!
I've seen congregations self-destruct because they refuse to remove a disruptive member - they don't recognise that they are hurting many in order to protect one.
I've seen incompetent teachers protected at the cost of harm to hundred or thousands of students.
These things are simply wrong and they're wrong because of a failure to take into account the long term and the big picture in order to avoid some fuss in the moment.
Sometimes we have to go against the flow. I'm willing.