I am sure you are conscious of the fact that there is no such thing as security in any material arrangement. Even if you were to obtain millions of dollars, you would not be able to secure happiness and peace of mind with all of that money. That is Krishna's arrangement. Permanent happiness cannot be found by relating with matter. We may think ourselves comfortable, but material nature will not allow us to be satisfied without Krishna consciousness. Again, Krishna cannot be blamed for this. We can only blame ourselves for not turning to Krishna for our ultimate shelter. He wants us to take shelter of Him and not in something temporary. He is, therefore, so kindly giving us the means to approach Him. The fault lies in our own unwillingness to take shelter of Him.
(Collected Letters to My Disciples, Pg 140, 2nd Paragraph)