But maybe we don't all have the gift of faith, for whatever reason
@Mustardseed86, why do you think this? Faith (as a general quality) is necessary in life. We have to rely on faith (in something) because we cannot have personal experiential evidence of everything. Added to this we don't know the future and have to make decisions based on what we think the outcome will be.
Where we (choose to) place that faith, this will differ. But nevertheless we all use (a type of) faith in day to day life.
Regarding some people being 'hardened', this came to my remembrance:
"5 And hope does not put us to shame, because God’s love has been poured out into our hearts through the Holy Spirit, who has been given to us.
6 You see, at just the right time, when we were still powerless, Christ died for the ungodly." (Romans 5:5-6)
And I don't see any reason here not to hope. And that is indicative of God's love, here. 🙂