It always depends on the project, And to use a framework or not is an important decision to take.
A Framework easily adds up several hundred kB of space to your project and as @Robert mentioned, if you're not using most of features the framework is providing then it's a waste.
My suggestion is, if you think the project is big enough and you need the relevant features that the framework is providing, then go for it. Otherwise, make a little style of your own and use it.
You can also take a part of the framework that is relevant to your project(like grid system for example) and leave the rest of it.