PJ, I'm staring 60 in the eye and I've been at this since my thirties. Believe me, I have "looked it up for myself." This Christianity Lite (all the reward and none of the suffering) known as Dispensationalism is a relatively recent arrival upon the scene as it concerns Christian doctrine and it has undergone numerous changes during its brief existence. By way of illustration, here is part of the introduction to the Companion Bible (King James) with notes by E.W. Bullinger, a preeminent Dispensationalist of his day. Page 2 contains his preface to Hebrews and almost all of it has to do with the authorship of the book.
http://www.companionbiblecondensed.com/NT/Hebrews.pdf
If you took the time to read it you'll note his extensive arguments for Paul being the author. He shared the majority opinion of his day and the days prior. This is one of many illustrations of how Dispensationalism as it is known today has mutated over the years to the point that it's early adherents would now be seen as heretics.
If you want to continue to see the Bible through the lens of Dispensationalism, fine. Just take the time to study it's advent and development so that you can offer an explanation for your belief through your study rather than ignore, mock and obfuscate as others in this thread do when asked to explain why they hold their beliefs.