Henny and Mussar both know what they are talking about.
Mixing into a limiter or mastering chain doesn't have to be a bad habit.It gives you an idea of the end result.
I did evening school about audio production and the teacher learned us how to do it and the results weren't that bad. But I just can't get used to this way of workflow so I don't do it anymore but there are some people who get good results with it.
The big disadvantage is that when you change the setup of your mastering chain, it will alter the sound of the final mix. So you have to be pretty sure about that mastering chain. If you mix into a limiter and you change the release afterwards, for instance the outcome will be different, defeating the purpose of this technique. It's a kind of working the other way around, having your mastering chain ready before you start to mix. Not necessarily bad but not my way of working.
Usually, when you take off the mastering chain/limiter, your mix sounds less good. Imagine that someone else (pro engineer) masters your music and he has no clue of your mastering chain. He will probably contact you to say the mix doesn't sound good.
If you're the only one working on your music and it sounds fine for you, just do it!