I have been immersed totally in a few different sports over the years and yes, you do get tired of them.
Basketball 7days a week for ummm, close to 20yrs.
Tenpin bowling 6 days a week (14 different leagues) for about 7yrs
Aussie rules football.... Etc. Etc.
Taking a break is good and bad. You may miss it, you may not. Finding something to give that 'spark' back is awesome.
When totally disillusioned with basketball, the thing that got me back was coaching an under 8's team. I was amazed how much love they gave me back for the sport.
I'm pretty new to mtb, loving it and have no real commitments so finding time to ride is easy.
If you want to ride, find a way to make it work. Family picnic somewhere (if they are into that kinda thing) with a ride. Doesn't have to be full on, could just be a relaxing scenic ride.
If the missus rides, do a 'date-weekend' and go to different places once a month (or any schedule that suits) and ride there. On the odd occasion my missus actually has a Sunday morning off we ride to the local markets, have brekky, walk around. Heaps better than driving around.
I can see the time constraints you have, but if mtb is your only outlet you need to make some time for you. Easier said than done though
You'll work it out mate, life is full of ebbs and flows. Finding what reduces the ebbs or ways to enjoy them (sometimes it's great just to step back for a bit, take a different perspective) is what helps the flows continue.