I personally make short term bets on certain altcoins using my own analyses just to increase my BTC stack. If you're planning on investing or trading and not planning on doing the work yourself, you might as well not do it entirely. Do something that actually interests you instead, like probably starting a business. Just a quick reminder that wealth shouldn't necessarily be made through cryptocurrencies.
Exactly, that's the method I use as you say. it is true that the principle in altcoin is only limited to supporting to increase bitcoin coffers. although not all altcoin. however some and most argue that the principle of holding altcoin only adds to some of the advantages of for example day trading. while for the btc itself we prefer to cultivate it in a pile of soil like a treasure that one day we will dig up a few years. do not let others know your bitcoin amount, leave it buried and keep the key in a secret place. game of altcoin for the short term.