In sin, even according to the Bible, there is momentary pleasure, and the moment is not thought of in eternity thinking. We should be angry about the hold that momentary pleasure has on us, not truly believing that this "moment" has the possibility of separating us from God. We are all born sinners, so Christ is essential to spend eternity with God. However, we continue to sin and need daily cleansing. I believe it's the moment by moment that affects our walk with God. We need to be careful not to categorize sin into "what's more sinful" - sin is sin is sin - if the Bible states it as being in oposition to God it is sin, and we should be very angry at the "moments" we allow to creep into our lives.
Uncontrolled anger is always self-centered and usually accomplishes harm, not good for anyone. Controlled anger is usually righteous, lining itself up with God thinking, and therefore God lead, and if that's the case, God's will will be accomplished. Example, Jesus in the temple!!!