God offers gifts to us, why turn away from these gifts? God offers himself in the form of bread and wine - that's a pretty big gift - why not avail ourselves of it? God offers us many gifts. To some he offers a grace to pray: prayer requires a special gift from God. To others he may offer the grace to live as a missionary in some far-off place. To some he may even offer the grace to bear martyrdom. We often refuse God's gifts, but this is not wise. Can we refuse such gifts and still be saved? I don't know, but the gifts are there, God offers them, why turn our backs to them?
You may not think that all these things are gifts from God, though a Catholic would think so. Fair enough, can I understand that. But I am sure you would agree that it is unwise to turn one's back on the things that God offers us. In this at least we can agree.
On the contrary, I think they are (at least some) are gifts from God. But I also would suggest that the only reason we desire to take the sacraments is simply because God gives us this desire. The reason we pray or want communion or want to be baptized or want to do anything is because God has placed this desire within us.