I'm going to assume that the phrasing of the topic was (perhaps unintentionally) too extreme. Rather than debating the relative importance of higher education, it seems to ask whether it is necessary for human life, like oxygen.
And it's not, quite obviously. You can be a successful caveman. People predate education; higher education is relatively even more recent.
So in order to give myself a balanced challenge, I'm going to cheat and modify this topic a tiny bit. Like this:
Higher Education Is The Absolute Best Way To Succeed In Life.
I hope that sounds fair.
I am FOR.
Here are my points:
assuming you're not successful already, which would disqualify you as you're starting on the finish line -- a higher education gives you access to a higher class of jobs and occupations, and it opens up opportunities that you would not have otherwise.
when following a career path, education gives the most reward for the same amount of effort, and most importantly the reward is not based on unlikely chances, favoritism or exceptional talent. Education is simply the rational, practical choice if you want to further improve the lot you've been given.
a higher education gives knowledge, perspective, and paths to self-improvement. Whatever your goals in life, the above are the tools you need to reach them. With better tools you can see farther, you have more options to choose from, you base your decisions on better data.
a higher education is a form of success in itself. It is a remarkable achievement and a measure of worth. Something you have going for you, that cannot be taken away, and that others will recognize and admire.
all human progress and our whole society are based on education, which means passing down our accumulated worth and know-how to the next generations, so they can take it further. A sane society knows this and consequently values education as its first priority. In getting educated, you're improving not only yourself and your chances of success, but also everyone else's.