Two brothers ran towards their home, after work. One ran at such a fast pace since he was being chased by some thieves. The other ran because he was longing to see his parents after being away from them the whole day. 

Similarly, there are few who are extremely frightened of the worldly pleasures entrapping them, and hence, want to attain God. While others, want to attain God, just because of their intense devotion and love for Him.