Why did Gravity Falls end so soon?

Related questions

1. How old is Dipper?
2. Why are there only 2 seasons of Gravity Falls?
3. Does Dipper ever get with Wendy?
4. Did adventure time get Cancelled?
5. Will there be another gravity falls season?
6. Is doofenshmirtz Phineas's dad?
7. Who is Lord Dominator?
8. Will there ever be a third season of Gravity Falls?
9. Where is the bill cipher statue?
10. Who is Mabel and Dipper's parents?

Tags

1. #gravity
2. #mysteries
3. #chance
4. #original
5. #before
6. #falls
7. #payoff
8. #their
9. #months
10. #endlessly
11. #cancelled
12. #sometime
13. #series
14. #spark
15. #disney
16. #quirky
17. #until
18. #finale
19. #shows
20. #there