It's your sex life, you can so whatever you want as long as both of you are okay with it.
We don't always bother with foreplay, we want to get to the actual sex (and sometimes I'm just impatient) and sometimes all we do is foreplay. It just really depends on what we're both in the mood for.
My partner has a particular idea of sex, and wants to be able to go for some time, to do so he has to come before penetration so oral foreplay is very important to our sex life. There are times where we dont do anything more than make out a little and then jump right into sex, but it doesn't happen often since he's afraid of leaving me unsatisfied.