In reply to John Teague.

The problem with jetpack is its bloat. You should have have on your site a code you can not maintain and jetpack is is too big for that (mainly from security reason but not only). The bloat leads to the plugin being updated once a month or two which means that you need to inspect the changes and re-test your site and this is just a waste of your time.

Now coding..... lets just say it doesn't have a great code and has some shady concepts (like turning off login limiter).

The code is probably no worse then most wordpress plugins, and for sure jetpack has useful parts, but since the most time you spend on a site is on its maintenance, you want should prefer plugins that you will not need to constantly maintain.