You should still have a front page, but there's nothing but the subreddits you opt in to. All I want to kill is the site pushing content at you that you didn't explicitly ask for.
It is very easy to use reddit that way. I use it multiple times a day and only ever visit the subreddits I have subscribed to, and that's all that appears on my main page.
Turn off the "show trending subreddits on the home feed" flag in your preferences and you will get exactly what you described.
Isn't that how reddit works now? I never visit r/all and my homepage (plain old.reddit.com) is just a list of content from the subs I'm subscribed to.