I don't need formula and all the other reasons for using latex are no longer that relevant.
Word processors are not appropriate for large documents that need consistent formatting. They're not desktop publishing applications. Aside from a more "pretty" output with less work, LaTeX also ensures lots of consistency across your document without having to think about it... whereas Word tricks you into thinking you've done something right with the WYSIWYG environment... until you accidentally do something that messes up the formatting.
Also don't want to spend time learning what is essentially a new language with often cryptic build tools so I can write a document.
One word -- LyX.
It's basically a GUI word processor of sorts, with LaTeX under the hood. Click a button to get a PDF.
Yes, if you need really specialized custom formatting or unusual features, you may need to dig around a bit to figure out how to do them. But the good news is once you solve a problem in LaTeX (and LyX), your solution usually "sticks." Solve a problem in MS Word with layout, and change some other random feature in your document, and suddenly your custom formatting screws up in all sorts of unpredictable ways. That's because MS Word is NOT a desktop publishing tool. If you want proper handling of large documents with consistent formatting, etc., you want to use something appropriate -- either LaTeX or something commercial like InDesign.
With LyX, you won't have the learning curve for LaTeX in pure text form. Mostly you just choose a document class appropriate to your task, select a few options from it to customize your formatting, and you're good to go. Even use a non-TeX font with built-in XeTeX/LuaTeX support. I'm not going to oversell this, though -- you will probably spend a couple days setting up a custom document preamble to get everything exactly the way you want it (if you care about typography... but if you care about typography, you wouldn't be using Word or any normal word processor).
But if you don't care about typography so much, you just need to conform your thesis to your university's requirements. Some schools actually have LaTeX templates available for use (officially or unofficially)... but if not, you may need to do some customizations. Luckily, you can often just ask in a TeX forum somewhere (e.g., on StackExchange) and people will frequently just give you the appropriate commands to include if you ask your question clearly.
As someone who went through the process of writing a thesis and also helped a couple others deal with last-minute formatting problems in MS Word, let me just say: you're going to spend at least a few days dealing with formatting issues no matter what. If you go with MS Word, unless you're a wizard who knows all the possible places Word will screw things up, you're going to spend several days at the end dealing with headaches where the text just doesn't flow properly or that figure/table/image/whatever simply disappears or completely ruins the formatting for an entire chapter for no apparent reason.
LyX isn't a perfect solution, since ideally you need to be familiar with the underlying LaTeX code to fix the few things that do go wrong. But if you're just doing one document like this, you can likely get the support you need on a forum. Chances are many of the questions you may have are already answered for you out there.