Atcoins investment gives fast profit if you are lucky to invest in a coin that has good potentials to pump and you are very fast to take your profit but it doesn't favour investors all the time because it doesn't give a long profit it only gives you fast profit if pick a good one but others who aren't lucky will face the consequences when it dumps. A good investor will not include any altcoin for long term project because most of the projects are pump and dump and holding them will cost you everything you have because once they crash they may not bounce back again. Investors who are into the business for long will use altcoin to risk some amount just to see if they can take fast profit but when they plan for long term they know the right asset to invest in which is bitcoin.
Investment should be for the future and not about short time profit because that's what will mislead you into losses since buying altcoins is the same thing as gambling. You might think that you will be smart to make profit from altcoins but the opposite is the case for many. Since, investment is to preserve wealth or pile up wealth for your future. Bitcoin is the best and should only be focused on. Altcoins are distractions because this was how I bought some altcoins in the beginning and regretted it.
Since, the creation of bitcoin, the price have been increasing till date and that shows that it's a good asset to buy, grow your stash and hodli for long-term. Altcoins are centralized making it a no go area for me anymore because I love bitcoin for giving me the opportunity to be my own bank and the decentralized nature it has. Think wealth, think bitcoin.