Is bootstrap worth learning?

Related questions

1. Does bootstrap require jQuery?
2. Is it necessary to learn bootstrap?
3. What is bootstrap and how do you use it?
4. What is difference between CSS and Bootstrap?
5. Do Web developers use bootstrap?
6. What is bootstrap sample?
7. Why is bootstrap good?
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9. What is bootstrap for?
10. What is bootstrap and its advantages?

Tags

1. #surely
2. #learn
3. #foundation
4. #other
5. #skeleton
6. #grasp
7. #responsive
8. #framework
9. #popular
10. #faster
11. #least
12. #could
13. #front
14. #websites
15. #development
16. #meant
17. #worth
18. #bootstrap
19. #learning