This reasoning is popular and spewed forth in various ways, but let me say that I agree. I totally agree. Why suffer if we don't have to? Why suffer if we won't lose our salvation because, you know, Jesus loves us? Peace, joy, and comfort on earth then eternal bliss. How nice!
HOWEVER, the question is, the most serious, chilling question that should make us tremble is this: What if this reasoning is wrong? What if the scriptures say otherwise? What if those who live according to this belief are not saved and are not being "blessed" as they think, but are merely suffering from a strong delusion? Who was Jesus speaking to when he said "ye are of your father the devil"? It was the professing believer!