Faith

Is it wrong to believe in different religions simultaneously?
Growing up, my best friends were Sikhs and Muslims. I grew up learning Arabic and short prayers from my friends, went to Sikh and Hindu festivals, and not once did I question my faith.
When I was 15, I asked myself, "If Christianity is the true faith, why are people of other religions so blessed?"
I've been raised in a strict Christian family. Church 3 times a week, choir members, deacons and several of my uncles are pastors with their own churches. The religion though, has never embraced me... Or I haven't embraced the religion.
I love God. I love Jesus. Is it wrong then for me to say that Muhammed (SAW) could have been the last prophet after Jesus?
Is it wrong for me to want to live my life like Buddha? Seeking peace, humility and enlightenment?
The Guru Granth Sahib, is it wrong for me to take its teachings into my life?
I feel like as Christians, we are very quick to say other religions are wrong, and we don't spend enough time reading and learning about them to see that Islam and Hinduism and Sikhism etc. are all trying to make us better people to prepare us for the next life, whatever that is.
My Muslim friends always told me about their love for Allah, trying to live like the prophet Muhammed. They would even tell me about how the Qu'ran has stories about every situation we can come across in life, from sex to surgeries.
I envied them because I wasn't that close to my God.
Despite being a healthy, well educated guy with good relationships with all the people in my life, I still feel an emptiness in my soul. Music is the only thing that touches me that deeply but I know there is more that I'm searching for.
I just want answers. Faith needs to find me. I need to find God. Whatever path I'm going towards, I need to restore my faith in God.

Before Babylon takes me to a place I can't return from.