No one has ever seen God, but the one and only Son, who is himself God and is in closest relationship with the Father, has made him known.
When God created the world in the beginning, he created everything, including mankind. We were created for relationship with God and with each other. We were not meant to be alone. Though some of us are introverts and some of us are extroverts or some of us are people persons and some of us are not, I think we all were created to not be alone and/or lonely.
Now you can be in a room full of people and be lonely and you can be by yourself and not be lonely, I think it all depends on your attitude. But, my point being is we were created for relationship. First, God created us to have a relationship with Him. Even if you don't claim a relationship with God or never have had a relationship with God, that doesn't dismiss the fact that God created you for relationship with Him.
I believe all created beings have a God shaped void in their hearts that can only be filled with God. Now many folks spend their whole lives trying to fill that missing void in their lives with all sorts of things like alcohol, drugs, earthly pleasures, popularity, material things, titles, sex, earthly relationships, careers, and you name it, people have tried filling that missing part of their lives with all kind of things and truth is nothing works and nothing will fill it, only the creator. God. God is what's missing, because we were created by a creator who desires a relationship with His creation.
Secondly, we were created for relationship with one another. Now, don't misunderstand this, people can't replace God. God is the first and most important relationship we can and should ever have, but God also put us on this earth with other people for us to also have a secondary relationship with others. Now, people screw this up a lot, they try to replace God with earthly relationships, or the mistake sex as love, or they seek the wrong kinds of attention from others, but God's desire is for us to have healthy relationships with others.
Our relationship with God should be our model for all relationships and God wants us to have healthy relationships with others. Of course there are different types of relationships, parents, siblings, children, relatives, friendships, marriages, etc...but the point is that these relationships be healthy. Now not everyone born is born with a good mom or a good dad, and we can't pick what families we are born into, but even if you didn't grow up with a good mom or dad or good grandparents, or whatever, there are still people out there who will love you and accept you and whom you can do and be the same things for.
The key to having healthy good relationships is having a good model. God is our model in order to know that model we have to know God. Which means, we have to read his Word(the Bible) and get in touch with his Holy Spirit (be baptized) and become a part of His body (the church) and through these things we'll learn from unconditional, healthy love is. We then can learn to model that love in our relationships with others. Too many people who no idea what loving relationships are or what love looks like because they don't know God.
I want to encourage you to know God. Know His love. Experience His love. Have a loving relationship with Him. Love God. Love others. Love others the way God loves you.