Magento 2 development: use or not Redis and Varnish?

Especially for Varnish it makes sense to use and test ist during development as you can run into big problems laster.

I just read Alan Kent's (Magento Chief Architect) Blogpost today where he explains the issue with Varnish:

One particular note is inclusion of Varnish. A very common problem that has become apparent is developers are not testing sufficiently with Varnish in place, resulting in issues only being detected at the end of a project when rolled to production. Developers are therefore encouraged to perform local development with Varnish enabled. One useful piece of feedback is whether Varnish should be enabled by default for all development as a base expectation.

Redis is easy to install and use so i think this should be enabled for development as well.