Such a variety of answers. I am amazed at how many old software programs people are still running. I think that's great!
I use Legacy Family Tree. I had used the predecessor to FamilyTree (from Ancestry) years ago. I then used FamilyTreeMaker for a few years but the updates were too expensive. When I got serious about checking into new genealogy databases, I found I could get a free version of Legacy (you still can). I started with Legacy 6, knowing that Legacy 7 would be upcoming and have different sourcing. The upgrade to 7 was pretty easy. It took me a while to figure out how to properly build sources with Legacy 7, in part, because I changed my mind several times about how I wanted sources to appear, etc. About two years into Legacy 7, I finally bought the Deluxe version. The standard Free version just wouldn't allow me to do all I wanted, but it was sufficient for 4 years. I upgraded to Legacy 8 Deluxe, when it came out.
Features I love: Charting, reports, the ease of creating a source: there are prompts and you can see the bibliographic source & footnote while creating it for tweaking. The Legacy 8 now asks me about similar names so I don't (theoretically) create the same person twice. The ability to have separate trees. Searchable name list. One of the coolest new features is that the software will tell you if you try to enter a county that didn't exist on the date you have entered. That is amazingly helpful.
One feature I find annoying: The location list. I want to be able to search it but it is alphabetized with the first part of the location. So it has Paisley, Renfrewshire, Scotland -- while I might want to find everyone who was in Scotland or Renfrewshire.
I use Legacy and WikiTree. I'm building my tree on WikiTree (and connecting -- ever so fun) but also using my database. I have a lot of living people in my Legacy tree that I would never enter on WikiTree.
Each has difficulties. A new program, whether the newest version of FamilyTreeMaker, WikiTree, Rootsmagic, Legacy, will all have differences and annoyances.