I, too, have done genealogy for decades and decades, and I've used Family Tree Maker software since it was owned by BorderBound. I'm not enchanted with it in the 2014 format, and may take a hard look at Roots Magic, which seems to get good reviews from the blogs. I've also been an Ancestry.com member pretty much since it started, and I really dislike the "New Ancestry."
Not only does it have all the problems of the leaves, but now, they have instituted a new "childish" format with big print and machine generated stories about the people. That would be fine, if they did that only for those simple-minded enough not to be able to manage something better than a machine, but they "extend it to everyone." I've already paid them for this year to get access to World Wide Records, but I think this will be my last year with them.
As to the DNA, you will, I'm sure, find the results interesting, but they won't "unlock" your family tree for you. They will show the % that is Irish/Italian/etc., and they will connect you to people with some of the same results. IF those people have done a decent job on their trees, you can just adopt their research-----but honestly, no one is going to tell you "I just took what I have from others, and I don't know whether it's accurate or not," so you won't know what you've got. The only way to find out if it's accurate is to check it for yourself.