Try everything that is available to you be it counselling for yourself and also for the two of you and discussing how you feel with your partner. If it doesn't change and you are still miserable then you will have your own answer. You do have to get to the decision point on your own. good luck.
NEVER! Kids or no kids. I was in a loveless relationship and it ended up with him in jail and me going for a restraining order due to him beating me up. we were unhappy for\ a year and it turned into yelling then after a few months of yelling he turned abusive
My grandparents have been married for over 60 years. They say they've only been in love maybe 50 of them. LOL You fall in and out of love over the course of a lifetime. When you notice you are falling out, try to get back to basics and reconnect. Stress, children, schedules, personal growth...all these things can become obstacles to a happy marriage. But, most obstacles can be overcome.
So if it it just loveless, but you aren't fighting terribly or hating each other, maybe think about therapy or a romantic getaway to try and connect again.
Long term, if things won't work out, it is best if you and him split up. You don't want your kids to think a life without love is OK. But, you don't want them to think they have to throw in the towel when things go off-course, either. It's about knowing when to try and knowing when to quit.
I agree that there is a lot more needs to be known before it could be a yes or no answer for sure.
Have you tried, has he tried. What have you tried? How long have you tried? is it a bump or has been bumped for a long time? Is it just something you two are going thru right now? Is he cheating? Are you cheating? Is he abusive?
What do you mean by loveless? I have talked to people that took loveless in different ways.
Marriage isn't something that is simple by any means so all these questions have to be answered before ever a simple yes or no could ever be said. Good luck.