Kind of hard to do important stuff without being online; financial transactions etc. If by important, you mean stuff you want kept private then realize that hackers can piggy-back on other people's connections to the Internet. One way they do that is with parabolic dishes to catch unsecured wi-fi router connections at a remote distance miles away. If you want to hack, do it safely and remotely.
I do hardly any financial transactions on the internet. Indeed, the one I sometimes do I don’t do on line all the time.
I also do not engage in any of the popular social media or networking either, as these are usually centered around how people feel or else endless updates on what they are doing.
... as for emails all I ever seem to do is delete them....
But I do rather like forums where people talk about what they think and believe rather than how they feel or what they are doing.