I asked myself all of these questions and more at some point in my life. Thank goodness for my testimony of the Gospel. As far as eternal torment for straying from the path, I don't believe that. Christ atoned for our sins. We were bought for a price. If we don't repent in this life, we will suffer for our own sins. And when we are forgiven we will be given our eternal rest. The first resurrection is for the worthy to do "the work" for others, whether it be preaching the gospel and repentance to them in spirit prison or temple work and saving ordinances etc. the eighth day is when Chist will present "all the father hath given him" for our final judgement. I know we are supposed to go forward with faith and trust in the plan, and I also lke to know with certainty things that are of import. Which is why I read church books and scriptures voraciously. Also, I steer clear of most secular media, as this helps me to not be double minded.
And if heaven is "boring" well I know that there will be no death, sickness, aging, fear, doubt, sin, hurt, pain, etc, so if joy and Christs presence is boring, sign me up!