maybe he doesnt read the op's question i guess. buying bitcoin in $100 amount would be small to keep it for a long time, with that amount i would rather invest it into trading and do my best to make it grow with it just avoid on lossing trade it cant be possible but be sure to do smart trades so that your $100 in bitcoin would grow not just on holding it.
$100 is not really a small amount for everyone but it is small if someone is wishing to hold his coins so for that he would need to grow them a bit by trading altcoins which can generate him good profits gradually even if he starts with $100.
Well for people who are saying that $100 is a small amount well get yourself lives guys for us who are not that wealthy that is already a big amount for investing into something so that we are going to make it grow. And there are only 2 ways that I can think of for investing it by trading and by just keep holding for it.
From what you can get for this amount especially when it come down to buying groceries for a week on this for one person then it is not just an amount to just not care about.
That amount isn't a small amount at all and you could do or buy some thing useful with it,as you said you could already buy groceries. With that amount. Just to think of it that there are lots of people struggling even to get $5 amount. How much more on $100? earning money is not easy as it sounds you should done hard work in able to gain it that's why we should give importance on our money that we've earned no matter how big or small.