SLC NAND flash is generally rated at 100,000 writes per cell. This drive has a 170MB/sec sustained write speed, so we could in theory reach the average 100,000 writes on 1700 bytes per second. This would use up the entire drive's write per cell in approximately 218 days of sustained 170MB/sec writes, assuming there is no performance degradation over the life of the drive as cells are used up. However, we would have written 32gb * 100,000 = 3.2 petabytes of data in doing so.

A petabyte is a staggeringly large amount of data. Wikipedia tells us :

The Internet Archive contains almost 2 petabytes of data. [1]
Google processes about 20 petabytes of data a day. [2]
The 4 experiments in the Large Hadron Collider will produce about 15 petabytes of data per year, which will be distributed over the LHC Computing Grid. [3]
Facebook has just over 1 petabyte of users' photos stored, translating into roughly 10 billion photos. [4]
Isohunt has about 1.1 petabyte of files contained in torrents indexed globally. [5]


I use the HDD's manufacturer 1000 bytes = 1 kb for my math, to be more correct you'd use the proper 1024, but I CBA to bother with it myself. It's close enough for gov't work.