The difference between bitcoin and altcoin is that in most cases the more altcoins there are the more scams there are. But not all altcoins are scams, some coins are much better. But Bitcoin is the best coin in the virtual world. Investors tend to invest more in Bitcoins than Altcoins as they never face losses by investing in Bitcoins.
Bitcoin is leading the crypto world and it is popular among most of the people. If anyone join with crypto, he has to familiar with Bitcoin first. Investment is always risky and Bitcoin isn't out of it. But investment on Bitcoin is a wiser decision and risk is comparatively low here.
cannot avoid all forms of fraud that occur when it comes to dealing with altcoins, the more new altcoins grow, the more likely it is.
but I agree, that there are quite a few that can provide very good returns for those who invest in them. therefore there is nothing wrong with continuing to analyze before you really want to place your funds.
Investing in bitcoin is relatively safer, but it requires sufficient funds to invest in bitcoin, which is different from altcoins because there are many choices that can be made with the funds we do have.