You don't have to lose 2-4 years of your life to get into IITs. If you have the aptitude and interest, you can easily do it in 3-4 hours of regular study everyday. Assuming, you go to school at 7 and come back at 2. Take rest until 4. Play until 6. Study until 9. Dinner and sleep at 10. Why do you have to lose anything?
I like to blog about various topics ranging from education in IITs to social issues in India and US. All opinions and views presented here are my own and not of my employer.