If there was no evidence for God or Jesus Christ, would it be commendable to still believe in either? It would be as commendable as believing in the flying spaghetti monster.
Everyone puts their faith in something. The real questions we need to ask is what exactly are you putting your faith in. Does it deserve it? Is it real? Is it good? Is it true? Faith for the sake of faith is useless, unless what you have faith in is real, good and true.
A few verse from the Bible:
Hebrews 11:1
Now faith is being sure of what we hope for and certain of what we do not see.
2 Corinthians 5:7
We live by faith, not by sight.
1 Corinthians 15: 12-18
But if it is preached that Christ has been raised from the dead, how can some of you say that there is no resurrection of the dead? 13 If there is no resurrection of the dead, then not even Christ has been raised. 14 And if Christ has not been raised, our preaching is useless and so is your faith. 15 More than that, we are then found to be false witnesses about God, for we have testified about God that he raised Christ from the dead. But he did not raise him if in fact the dead are not raised. 16 For if the dead are not raised, then Christ has not been raised either. 17 And if Christ has not been raised, your faith is futile; you are still in your sins. 18 Then those also who have fallen asleep in Christ are lost. 19 If only for this life we have hope in Christ, we are of all people most to be pitied.
As a believer in God and Jesus Christ, I feel I have very good reason to believe in both.
There is evidence to look at, and that “evidence demands a verdict.”
A word from Alister McGrath:
Faith is like reinforced concrete. Concrete which is reinforced with a steel framework is able to stand far greater stress and strain than concrete on its own. Experience which is reinforced with understanding will not crumble easily under pressure. Again, faith is like the flesh and bones of a human body. Just as the human skeleton supports the flesh, giving it shape and strength, so understanding supports and gives shape to Christian experience. Without the skeleton, the human body would collapse into a floppy mass. Without flesh, a skeleton is lifeless, hollow and empty; without the skeleton, flesh lacks shape, form and support. Both flesh and bones are needed if the body is to grow and to function properly. Faith needs the vitality of experience if it is to live – and the support of understanding if it is to survive. So reinforce your faith with understanding.