I did it and it's been very interesting.
When you do it be prepared for the results to be surprising at least or shocking at most.
I knew I had a great grandmother that was Irish and a great grandmother and grandfather that were Dutch. I thought everyone else was English but it didn't turn out that way.
I am 57% Western Europe ( French, German, Dutch, Belgian)
17% Great Britain(English, Scottish, Welch)
15% Iberian Peninsula (Spanish, Portuguese)
7% Irish
3% Scandinavia
They also match you down to 6th cousins. For me this number gets into the thousands.
This didn't happen to me but you could get an Email from a half brother or sister that you didn't know about. So be prepared for the results, it may unlock family secrets that have been buried for decades.
The matching of cousins was accurate for the ones I recognized, some I actually know and some that I recognized names when I looked at their family trees.