Short answer, nothing wrong with getting assigned.
Usual put assignment horror story goes something like this; Bob (tried to assign as generic a name as possible) thinks its neat and great to collect premiums on writing puts. He does it a little with success and no assignment. Bob thinks, man I could do this every month and generate a lot of cash flow. Bob replicates process for many months. Then Bob starts to slowly extend past appropriate risk tolerance levels and then, presto, the market starts to tank (like the last couple of days) and he takes assignment on a bunch of stock he REALLY NEVER EVER INTENDED TO OWN AT ANY PRICE.
You see, if writing puts is a part of an overall process that has been evaluated and conforms to your personal specifications, there's absolutely nothing wrong with assignment. Later this week I expect (hope) to be assigned some stock. It is stock that will be used to build a position that I have evalutated and expect to make calculated returns upon.
The problem with assignment usually comes when the writer starts to chase premiums and gets overextended.
Good Luck.