Conservatism is not growing. Longterm-wise, the U.S. is headed in a liberal direction. Just look at the results of the 2016 Presidential election, but only take into account the votes cast by millennials (people who reached young adulthood in the early 21st century). The final delegate count would have been Hilary: 348. Trump: 163. Trump would have only taken a total of 17 states.
Millennials aren't the majority yet. But in a few decades, they will be. In the long run, the U.S. is headed towards acceptance, tolerance, and love. I truly believe that. Have patience.