Ditto that if finances permit! Plus, a couple of years down the road, it is just incredibly gratifying to get to share this hobby and your self built amp(s) with your little one(s). If I fire up the mainline and hand over my hd800's, my 4 year old will sit quietly and soak in the tunes for a good 15-20 minutes before I can pry them away from her. My wife indulges, but can't relate to, my love of hifi headphones, but my kid clearly gets it and is thrilled by any opportunity to listen to the main rig.
+1
Mine as well, though as my rig is in the bed room any initial quiet listening often evolves into bouncing and dancing on the bed whilst wearing them while I nervously cosset the cable amp end, luckily its a long cable. But a joy to watch.