Linux is good and free. But can be more hard work sometimes. Depends what you are doing and how patient you are. There are lots of different implementations as well, so can get confusing. Ubuntu is probably not a bad starting point though.
It's very much just like using Windows for the most part. But sometimes getting stuff to work can be trial and error and you can tell it's not as a polished product. It's a little more rough round the edges and you can end up getting yourself in a mess easier. There is also an expectation with most Linux versions that you will be command prompt (terminal) proficient.
I have had Linux at home and at work and would certainly use it again. But I have found bugs and issues each time.
I still have and use Windows machines too, but my main home PC and work computer are Mac's these days. Best of both worlds. All the benefits of a UNIX based OS. But with a more comprehensively finished product. And more off the shelf applications that don't look like they've just been lashed together by a developer with no User Interface design.
Over the years Linux has got better and better to the point it is now a very polished product. It is very different to Windows but then so are Apple products and for that matter Android (which is just a flavour of Linux for phones and tablets)
There is a learning curve as there is for anything new but in many ways it is vastly superior to Windoze
Faster as no need for speed crippling anti virus software
Faster to install - you can have it installed and fully updated in under an hour. Compare that to the many many painful hours it takes to install W7 or W8
So long as your computer is compatible (most are) the drivers install automatically.
Updates take only a few minutes without the multiple reboots.
Software is easy to find and install from the software store, a bit like Android and 98% (ish) of it is free.
There are multiple flavours of it so if you don't like one then try another. There are even different desktop environments from the same supplier, eg Ubuntu, Kubuntu, Xubuntu, Ubuntu server, Edubuntu etc.
And as for the command prompt I rarely go anywhere near it nowadays and most people will never need to.