By Dan Weil Inflation, which soared to 7.9% in the 12 months through February, will spark trouble, he said. Throughout the years, it seems, older generations have criticized younger ones for being soft. Whether it’s baby boomers or Millennials, many of their elders think they haven’t measured up in terms of dealing with life and its setbacks. BlackRock President Rob Kapito, 65, expressed similar sentiment in a talk at an energy conference Tuesday, Bloomberg reports. BlackRock is the world’s biggest money and asset manager. Kapito framed his comments in terms of the impact of inflation, includi…