Hi there,
No problem, I know that it's really daunting getting into 'media' and there is practically no useful information about it so willing to help out. Your answers below:
1) There are no 2 ways about it, it is very hard to get in to and you're never guaranteed to get a job in the industry on education alone. Going to uni and studying something media related will help you towards getting into industry as it will show employers that you really do want to get into the industry and not just doing it on a whim, but I have also met a lot of people who haven't been to university or done a media degree and been successful. Going to university will teach you a lot more than what is in your course though, such as how to apply knowledge and problem solve, as well as other life skills.
2) For me it was relatively easy to get into the industry and where I am. I was at the right place at the right time. After graduating I sent out dozens of CVs and emails to media companies and heard nothing back. One day I decided to take a different approach and go in and speak to someone face to face to about any vacancies. Luckily for me the first place I went in to were looking for runners and from there onwards I was lucky enough to keep moving upwards. Once you've gotten your foot in the door with media, you're usually fine.
3) Making contacts isn't imperative at college/ university, though it never does any harm. I wouldn't worry about it. Reality is only a small percentage of the people who you may have studied media with will make it into the industry. It is good practice to start making contacts though as it will help you build your personality as it's a trait which will benefit you down the line.
4) Media qualifications would be recognised in some fields but I wouldn't say it was a qualification you should pursue if your heart isn't in making it in the media industry. If you were unsure what you wanted to do I would recommend something a bit more generic which could be relevant in lots of different jobs.
5) The pay is poor for a long time until you establish yourself. It usually takes around 3-5 years until you're on a decent wage with a decent role. There are plenty of options in the media industry and every role has it's own pros and cons. Some jobs are freelance that pays very well but you wont work throughout the year, others are permanent but comfortable. Really depends where you want to specialise.
6) It is tough being a writer. I would suggest that if you had ideas for scripts, you should write on the side but pursue to get into 'development' within a production company. The development department are normally responsible for ideas for new TV shows and films. Usually you'd be working on someone else's idea but over time you can start pitching your own ideas.
All in all, it's a fun industry if you make it but it is hard work. The main thing to bear in mind is that the only way to get into the industry is by being a runner. If you're lucky enough to get to that stage, (you probably wont feel lucky with the poor wage and the amount of tea you'll have to make, but it is a rare privilege to get a foot in the door) you can succeed by just being a likeable person and hard working.
Do you have any ideas as to which area you'd like to specialise in? As there are a lot of areas to consider, do you need help understanding them all? I'm from a film/ tv background so I'd only be able to speak for that alone and not other areas such as radio/ web/ print though.
I hope this has helped in some way!