Only alt coins are profitable to mine now, for the bitcoin mining it's hard to get now on it because of it's difficulty. And even mining of alt coin now is having it's difficulty increase especially the Ethereum. But there are some alt coins that are good for mining now like xmr. But if you still have those mined bitcoins it's better if you will just hold it until the price of bitcoin fly to the moon.
And that's why those aspirants that wanted to try mining of bitcoin aren't focusing with mining of bitcoin now, they are now into GPU mining instead of ASIC mining because it's even more reliable and cheaper. There's also a wide choice of users for the coins that they are mining. Some others are deciding instead of buying mining rigs, they are buying bitcoin and just holding it for their lifetime.