I don't even know what i will be into at end game. I just want to level up and have fun.
M/p is an okay combo for questing and solo play and such. You have the immune from priest general (holy aura), plus healing, and enough damage to kill things without taking all day.
If you just want to have fun, play w/e you want. Other people's opinions shouldn't get in the way of you playing something you enjoy (whether it be m/p or something else).
In end-game scenarios, m/p is indeed weak. After some tweaks to certain elite skills, and the addition of the 60 and 70 elite skills, m/w has the highest mage burst currently, by a large margin. Since most groups only value and look for bursting bosses down, m/p will have no place in end-game instances.