It's always a good time to get into the real estate business :) However, each person will define 'good' or 'bad' in their own way based on their current financial position, expectations and goals.
If i was currently employed, i would start now but only part time while keeping my job. If i was not currently employed I would jump into a real estate career full speed ahead.
I think the best thing for anyone considering a career in real estate to do is to sit down with a Realtor they trust (or a couple Realtors if they don't know any) and that has been in the business for a while. Find out the good, the bad, and the ugly and see if it's a fit.