Always: 2

If a person returns home only when he has something to say to his family members, it means he is treating them as if they are business acquaintances; he has no inner connection to them. A healthy person returns home for no other reason than that is the place where he belongs.
The healthy person will come home every night even though he has nothing specific to say to the other members of his household, solely because that is the place where he feels at home. It is the returning home even with nothing to say, that shows it is home for him. Someone who comes home only when he needs help, shows that it is not his natural place.
This is the significance of prayer at set times even when one is not inspired to pray. If one prays only when he is inspired to do so it shows that he knows what to do when he feels like it. However, when one prays because he is aware that it is time to pray, and joins others in prayer, and does so even though he is uninspired, he shows that prayer is part and parcel of his life. He is there not just when he senses something to gain from it. It is like a marriage that is there for all circumstances. He belongs before Hashem now, no matter what.