I suppose it depends where you live and where you want to work.
All of the web development shops I want to work for don't require any type of certification, as long as I can do the work and demonstrate the personal / technical skills for the job then I qualify.
It may be different for you but I would certainly not choose to study six more years if I were 33 years old for a change of career.
If you're really serious about doing this then you should be able to learn all the required skills in 1 year of dedicated study, maybe 6 months.
I've always thought of schools as a place to teach you how to learn, if you've already done this then there's only the practical skills that you can still learn from it - and those can be done faster and cheaper on your own.