I've been cycling seriously/regularly/avidly since April 29, 1990 ... and a little less seriously/regularly/avidly for 17 years before that.
I grew up in a cycling family ... cycling is what I know and what I do.
That said, over the past 24 years there have been ups and downs. There have been some years where I haven't ridden very much for one reason or another ... injury, life circumstances, other priorities, etc.
And sometimes taking a little break is the best thing for the motivation ... you get back into it with renewed energy.