thats also what i think about  . on my investment i categorized coin based on thier term ( short mid , and long )  i put eth on the long term while btc is for both short and mid but i dont continously add up coins due to lack of budget  and also not eth is more stable or wont decrease that much  . that makes it hard to invest on it  unlike to btc which you can buy at random times  because its value can decrease too randomly    .  investment for the future will depend on ones handling  , if how long are you comited to hodl