If one were to buy and hold solid avaerge coins (not a coin that kicks out and gets 10000% gain), but rather a nice steady gain like eth, Ltc etc (top 20) and starts with 10k, is it possible to reach a million without trading and buying/selling at highs and lows? If so, how long would you predict it would take? Or are most coins not going to last long term, so every 6 months would I have to rebalance with newer coins?
As long as the coin you hold is the best coin in crypto, you do not have to worry about it surviving or not. Because the best coins will always last as long as the demand for more and more. And if you continue to hold, surely in the future you will get satisfactory results.