Now I use bitcoin for investment only. I have few coins, so I do not want to use them to buy pizza or coffee. I am hard working for them. I better leave them for the future.
You could use before to buy pizza , coffee etc with bitcoin but now the transaction speed is really slow and fees has also increased. So it is best to use bitcoin for investment purpose only. And also it was created for investment purpose only , so it's better we stick to the main idea rather than doing something else