I live in that world by outsourcing article fetching to external services and storing all messages/articles locally. The basic setup is this:
Emails:
- Offlineimap syncs 2 Gmail accounts and connects directly to...
- Dovecot as an IMAP server. Dovecot, stores the emails in Maildir format and Gnus's nnimap backend gets them from the local Dovecot server.
RSS/Atom feeds:
- A program called Feed2exec saves RSS and Atom feeds in Maildir format. Dovecot monitors those folders and serves them to nnimap along with the emails. There is at least one other program that fetches newsfeeds to Maildir, but Feed2exec is in debian.
All 3 of these services do their job regardless of whether Emacs is running, and nnimap is super fast when the server is local.
I don't read actual newsgroups anymore. If I did, I'd install Leafnode for them. But I wonder if the nntp backend would benefit to the same extent that nnimap does.
Lisp (and especially Emacs Lisp) isn't harder than other languages. I'm not a professional programmer either, but I've dabbled in languages from BASIC to bash to PERL, JavaScript, and Python. In my experience, Elisp has been the easiest of all of them.
Once you wrap your head around how lists work in Lisp, it all comes together pretty quickly. And Emacs's self-documenting nature makes learning it that much easier.
The syntax is more consistent than any other language I've come across. It's lists all the way down.
Just do "C-h R eintro RET" and start learning. Do "M-x find-library RET" to read the code of your favorite package and figure out how it works.