Decided to only invest in index funds. Anything I'm missing?

I tried my hand at value investing. I read the popular books, did analysis, replicated strategies, lost money and finally realised, I can't do this. My reasons for only investing in index funds: 1. I don't understand any other strategy. 2. I don't want to spend time in analysis, trading or learning this. I feel that time should be spent living. 3. Index mutual funds have around 0.2% fees. 10 times lower than other funds. 4. Index funds are directly related to country's economic outlook. So if the country looks strong, so will it's index compound. 5. Alpha generation may be possible but the tradeoff of time spent to generate alpha is what I'm not interested in (point 2). 6. To me, investing doesn't mean getting rich. It just means staying where I am and not falling behind. 7. Index fund rebalancing takes care of country's economical shifts. 8. I'm investing for long term or 20+ years. In fact, I don't plan to take out the money unless it's the last option for survival. In other words, this is not goal based investing. 9. Index fund investing is not limited to one country. 10. Index funds avoid any fund manager bias. 11. In the rare case that indices fall over long periods of time, to me, is a bigger country level problem than my declining portfolio. Currently investing in Nifty 50 and SnP 500