I agree, that's what I've done.  For 2 reasons.  First I've had different ISP's over the years and they all offered email accounts.  The problem ensued when I went to a different ISP and then lost access to the email's from the first ISP.

Now no matter what ISP I have I will be able to continue with my email.

Second, if only friends (close) and family have one of my emails then I'm not over burdened with junk-spam in that account.  And the second business account is mainly business, if I have too many emails from a business that constantly is making worthless offers I set up a filter to automatically junk them.