With the current difficulty, it takes an average of 9.4x1018 tries to solve a block. It takes on average 2159 tries to guess the private key for a bitcoin address, which is 77,739,448,794,196,963,734,238,554,931 times more difficult. So, if it takes 10 minutes to solve a block, it would take only 1,478,048,688,002,832,225,534,994 years to guess a bitcoin address. Mining looks much more profitable to me even if the block reward is only 1 satoshi.
Only 1,478,048,688,002,832,225,534,994 years ? Pff, easiest s..t in my life