Deloitte Software Architect interview questions

First meeting with HR and one of the dev managers, a second interview with the dev manager and a senior developer and a last interview with the CTO. The interviews happened in the Mobiento office (I was told that Mobiento is part of Deloitte) and everything went well until the last interview when I was asked if I had family and children??? What type of question is this? It's 2019 and I think it's clear by now how discriminatory are those type of questions during an interview, for both woman and also for MEN. If it wasn't for this questions I would probably have accepted their job offer, but I will never work in a company with discriminatory practices.

30 mins call with a senior manager and partner. The interview was good, focused, they explained what was their understanding of the project . Made relevant questions and provided very concise information.