I never want to invest on any of altcoins by selling my bitcoins because I knows that bitcoin has more potential than any other coins so it will give more benefits in future if we hold until,if you invest on altcoins you can invest the amount from profits of your bitcoin.
well Good for you but think it carefully sometimes altcoins has a potential also not just always bitcoin is the best priority it depends on how you invest and what kind of investor are you.
If selling altcoins and buying bitcoin is Good also, in the way that you can make offer more that usual.