We do at my work. It has much more robust options. You can keep multiple jobs from running at the same time if one takes too long. You can auto kill it after a time limit. You get a web UI for all logging from the job. You get great built in tools for auto deleting logs after a certain number of builds or time period. You get a very robust email solution for sending out alerts when jobs run or don't run or fail. It adds some complexity vs CRON but it has many more features.