It’s strange that you imagine there is “so much hostility” towards religion when you know most people are indifferent.
That depends on what you mean by “own religion”. I’m somewhat biased but I consider religion to be unique and individual. One person who identifies as (for example) Catholic won’t necessarily have anything in common with lots of other Catholics or, significantly, the senior leaders of the Catholic faith. Pride in how you personally practice your beliefs is entirely different to pride in the wider practice of your faith by all its adherents.
That said, I’m not convinced pride is a good thing in the latter context. I have the same opinion about things like National Pride too.
I think many people are brought up in a religious background (if only nominally) that would then be recognised as “their religion” without them personally considering and accepting all that religion involves. The added complexity of wide scale communications means that both the image of any given religion is much deeper and wider than it was in the past and information about all the possible alternatives is more readily available. Any religion would be a hard sell with all that information and competition.