Yes, keeps adding Bitcoin aside from altcoins because this is the safest and most profitable in long term investments and we should learn to wait and support legit coins than those Pump and dump project that will surely make you hit the ground if did not take the chance selling in hyping season .
Do you mean only focus on buying Bitcoin? I don't think we need to ignore altcoins, altcoins also have a good potential profit. But we must be careful to choosing altcoins to buy. Don't buy altcoins that have no clear fundamentals, especially those new altcoins. It is better to buy top altcoins that seem to have a good future and are supported by most crypto users. We can analyze the volume of its transactions on exchanges to know how well people support those altcoins.
I don't know if you fully understand what I posted here but it is clearly I mentioned "KEEPS ADDING BITCOIN" but i did not mention not to buy altcoin , what i Say is optional , if you wanted safer investment then best to buy Bitcoin in this dumping season , but of course buy altcoin that moving great or lowering now as there is many chances to earn when the market return to Bull running like what happened constantly.
dump now and Pump tomorrow.
If you do really want a bit of assurance with your portfolio, having bitcoin for me is also a must. When most of these alts are disappearing, btc stays. There will be promising and valuable alts to hold, but yes, that is for you to evaluate and study which one of them are worth holding to. Because let us admit, most of them are launched for the sake of the dev team's pockets. Very few has the sincerity to develop them into something useful for the public consumption. This is why, it is very risky when it comes to alts, you have no idea of the project's longevity in the market as it depends mostly on the team.