50 wasted years for me, too.... and I, too, hold resentment. In fact, a lot of those years were worse than just wasted. For example, one can lie on the couch all day and waste time just watching TV and relaxing in comfort OR he can waste time by working in misery on and investing money in a project that fails. If I'm going to waste time, I'd rather it be in a way similar to the former, however, as a fulltime JW, I wasted time in a way similar to the latter. I slaved in misery with no pay for decades, actually donating to my master the whole time.
I resent my mother (dad was non-JW) because she is still in the cult in spite of having me around to try to convince her of its wrongness. She knows my intelligence and abilities and honesty, yet she listens to Stephen Lett and not me.
I have negative feelings for all my former JW acquaintances because I think that anybody who can be a believing JW today is seriously lacking in something - intelligence, comprehension, discernment, honesty, humility, or a combination of such.