That is why we are here, more on for bitcoin because its probably the most expensive asset yet the best asset to own. So without hesitation, invest in bitcoin. Although it won't be profitable the whole time, but if you chose to hodl it for a couple of years, then you will be instantly rich once you decide to sell it.
It may be expensive if you are trying to get a whole number volume of bitcoin. Go for smaller fractions and should be more feasible, specially during heavy bear cycles. Current bear cycle is towards the end as the price is inching upwards, so this is the time to hold or sell in future.Quote
However, i believe there are still these established altcoins that would make us prosper, but still the chances are rare. And it takes a lot of patience and right decision making not to end up losing from them.
Very difficult to screen from the endless stream of shitcoins getting released everyday. Each new team trying to develop a new project seems promising at the start but as time passes they all end up being the same. Hence from my experience it is better not to fall for that greed and just buy bitcoin at low and sell at high. Of course the top 5 altcoins can be bought, but these should be limited in your portfolio, not the major share. 
Bitcoin is the number one controller of cryptocurrency. It moves the prices of other coins to the front otherwise so it is definitely going to rise first before you pick etheruem as second investing coin, this is the dynamics of cryptocurrency.
