Good news. Only possible negative I could see from this, which has been brought up by numerous conservatives I've heard from and/or talked to, was addressed by Anthony Kennedy.

[quote=Justice Kennedy]Finally, it must be emphasized that religions, and those
who adhere to religious doctrines, may continue to advocate
with utmost, sincere conviction that, by divine precepts,
same-sex marriage should not be condoned. The
First Amendment ensures that religious organizations and
persons are given proper protection as they seek to teach
the principles that are so fulfilling and so central to their
lives and faiths, and to their own deep aspirations to
continue the family structure they have long revered.[/quote]

Meant as a reassurance (from my interpretation) that religious institutions are still free to conduct their practices without molestation, including performing marriages exclusively according to their own definition of 'marriage'. So, despite claims otherwise, religious freedom is still abound, and marriage equality is now legally guaranteed. All's good.