Unless you are translating a poem or anything related, the translation industry is a business.
And just like every business, it is normal to look for tools to improve your productivity and your profit.
Profit enables companies to hire people, to invest and to grow.
And using a machine translation tool definitely increases your productivity and consequently, your profit.
Plenty of tools exist. Some require a licence, other don´t (we don´t for example).
Running a business is hard enough, and it´s ok to make it easier.