How many Kindles is too many?

So I have a Kindle Scribe and a Kindle Paperwhite but I’ve been wondering if I should also purchase the basic Kindle for traveling. Is it too much to have three Kindles? Do other people have multiple for different purposes?

I love my PW for reading while at home and the Scribe is my work notebook, but I’ve been thinking it would be nice to have a small and transportable Kindle for reading when on the go and travelling.