Someone may be attracted to the process of devotional service because he thinks he'll be relieved from suffering. Most of us find that practicing devotional service does not relieve our suffering, or it produces other kinds of suffering.
Sometimes people are disappointed by this and even give up their devotional service in frustration. Of course, if even for a moment we receive the taste of Krsna's lotus feet, we will feel fully satisfied and our sufferings will pale in comparison. We will not be able to forget the taste of devotional service ever again. The trick is, then, to get even a minute taste of real Krishna conciousness. We will be more open to receiving the taste of devotional service if we clear the heart of anarthas.
Lectures from a disciple, Vol 1, "Anarthas can choke the bhakti lata", Pg 452 - last Paragraph