I understand your mindset.
I agreed with it when I was living in that lifestyle.
I understand it's quite the conundrum.
The only problem is that it's not actually a "given" like you are portraying it, it's a choice.
You've chosen to align yourself with something that demands that level of subservience from you. You haven't been forced to follow it because it's been proven true, it's a choice on your part to ACCEPT it as true. Thus, you're stuck in that hard place where now you can't shift along with the culture.
I realized eventually that (1) there was no proof that particular position was true, it was all a choice on my part and (2) my experiential knowledge had accumulated to a large enough degree that I concluded my original interpretation of spiritual reality was wrong.
You can believe what you want, but honestly, yes, the culture will dump you behind if you don't find a way to deal with it. It's happening now, the Boomer Christian leaders are bitching over the "downfall of America" and post-modern thought. Well, get used to it. If you're going to cling to a rock and not move, then you WILL get left behind. And not in the good sense. Christians used to think they are politically relevant. Well, that's been changing, and the conservative Christians are becoming more and more irrelevant, more of a pocket faith and minority. Eventually that's what it will end up as -- a curiosity.
The Bible is still being sold and is "relevant" because it's got a lot of deep insightful stuff in it. It's also the sort of text that can accommodate a lot of different experiences and philosophies. But each culture reads it and makes it its own. There is no "standard" interpretation. So it looks like the Bible is being relevant for centuries... but it's not what is being suggested in this thread, that a particular INTERPRETATION of the Bible is relevant throughout the centuries, no, not at all. each culture has its own interpretation... and each generation... and its that interpretation that is relevant and why the Bible sticks around.
If you stick to your particular interpretation without focusing on the broader applications, you'll get sloughed off. No way to avoid it. Times change. The concepts don't, the specifics do. a lot of evangelical thought is based on specifics that lose relevancy over time.