Damian, I would think really really really hard about such a decision. I went to school for the same reason (a safety net for the future) and during the first year I loved it. There were a handful of classes and instructors I enjoyed but IMO I didn't get $75k worth of enjoyment nor did I learn $75k worth of knowledge. Ultimately I brought this upon myself by getting a degree in Computer Network Systems, a field that I already knew and was well beyond the knowledge they would teach in a classroom. I had more IT experience than some of my teachers at that point and when you have to explain to your classmate next to you every week how to do a ping and traceroute, you quickly realize that college is designed for people who need to learn something and not for people who know that field and want a piece of paper to prove it.
Honestly, the vast majority of the students in the same program as me were people who were doing construction jobs who wanted to learn how to work with computers. Most of them struggled with our intro classes but they got a lot more out of the classes than I did (especially since I was instructed not to answer any questions).
This is why I highly recommend people who already know a wide variety of skills to focus on certs instead and use them to build a strong focus on a specific area (i.e. servers, networking, security, storage, etc...). It's a lot cheaper, a lot less time consuming, and you'll get a lot more out of it by focusing on one area and learning everything there is to know about that area. While some people will scoff at certs, managers love them and managers are the ones who hire people.
Now if your goal is to go to school for something completely out of your realm where you don't have much experience/knowledge in then I'm all for that. You'll have to work a lot harder than in a field you already know but you'll get a lot out of it.
Just make sure you know what you're getting yourself into and make sure you can afford it in the long run. One of the reasons I haven't sold my house in Florida yet is because my student loans would prevent me from buying another house in the next 10+ years and I really don't want to buy a house in my late 30s.