I do. My house is nearly 70 years old, and still has the original copper piping throughout. I replaced some recently because I had to move things around for a bathroom renovation, but all the old stuff I took out was still in perfectly fine condition. I expect the rest of the copper in the house to last another 70 years.

Want to take a section of the piping off to check what's wrong? Very easy with plastic pipes, will take you a couple minutes without any tool.

What kind of plumbing are you doing that lets you use threaded joints on everything? Anything under pressure usually requires glued slip joints, and those certainly can't be taken apart without tools, or without having to use a fitting to get it back together.