Pros
Deloitte and other Big 4 accounting firms provide a good Springboard into other accounting fields after some years of employment at any Big 4. Perhaps the best reason to work here is name recognition. You work here, pass your CPA, become licensed, guide some team members in an audit, and then peform that audit, you gain a lot experience that would take many years to achieve. For this reason, working at Deloitte, or any other B4, is beneificial.
Cons
Work/life balance is a joke during busy season. You really do not have the opportunities that you need to keep yourself happy between the months of January through April. Most weeks you are working 80 hours, but only reporting 65 to keep under budget. And during those 80 hours, it's hard to spend time with friends/families/yourself. If you can sacrifice that much time of your life, then come to work here.