The ‘problem’ with God and miracles as I see it is that they devalue humanity.
In early times, man could not explain the coming of rain and winds, why lightning flashed from the sky and why some were struck down by disease and others were spared. These mysteries caused men to fear nature as they could not control or predict it. Some men of greater insight could recognise the coming of these events and once recognised they could be predicted. However these men were still bound by their fear of the unknown. They interpreted these signs as portents from unknown, supernatural agents and when they saw no signs, they would appeal to these agents, placating them with prayers, sacrifices and complex ritual. This practice of magic in its most primitive form as a component of hysterical superstition formed the basis of early religion, fashioned gods from the sun and the rain and through religion man began to construct his first, great civilisations.
Customs and rituals developed over time from priest-magicians, descendants of those men of wisdom, who were charged with placating and divining the future from the gods. But this was done only in ignorance. It was only done because we could not explain what we saw.
The truth is, humans survived for hundreds of thousands of years due to adaptability and intelligence.
The trend with modern religion (and for the most part I mean Christianity here) is that it fosters dependence on a supernatural entity which has not provably done anything in 2000 years or so (if not more and if it happened at all).
Humans do not need to ascribe to the supernatural that which comes from their own wit, their own skill, their own temerity, their own will, their own desire. But thousands of them do. And they profess how it could not have happened without faith when, in every known case, it happened absolutely without faith.
Do not abdicate your victories to a myth. Do not give a fairy tale the credit for the success that you have worked so hard to achieve. Revel in your own ability, the strength in your arms, the beating of your heart, the ideas in your mind. These are yours.
This is why I do not describe myself as an atheist. I am only a humanist. Humans are brilliant. We don’t need to believe in a myth to get through the day. Belief in ourselves is more than sufficient.