Foe. Been there - done that. First marriage had sex before marriage. Second time around waited until the judge signed the certificate ( I was 32, Bud was 44). It is now 30 yrs later and we are closer than ever due to common interests besides sex.
I think of sex as the 'frosting' on the 'cake' of life. One can live on 'cake' alone, it's better with a bit of 'frosting', but all 'frosting' and no 'cake' is not good for one. What is important is the 'cake'/life's partner. Chosen wisely, he/she will 'sustain' you for the rest of your life.