So because we don't see 747s growing on trees, therefore your god exists?
What if you're wrong? What evidence do you have that you chose the "one true god"? Your 2000-year-old book says so? What are the odds you picked the right one?
Remember this is a partial list, and remember YOU'RE AN ATHEIST with respect to all of these other gods:
A, Adad, Adapa, Adrammelech, Aeon, Agasaya, Aglibol, Ahriman, Ahura Mazda, Ahurani, Ai-ada, Al-Lat, Aja, Aka, Alalu, Al-Lat, Amm, Al-Uzza (El-'Ozza or Han-Uzzai), An, Anahita, Anath (Anat), Anatu, Anbay, Anshar, Anu, Anunitu, An-Zu, Apsu, Aqhat, Ararat, Arinna, Asherali, Ashnan, Ashtoreth, Ashur, Astarte, Atar, Athirat, Athtart, Attis, Aya, Baal (Bel), Baalat (Ba'Alat), Baau, Basamum, Beelsamin, Belit-Seri, Beruth, Borak, Broxa, Caelestis, Cassios, Lebanon, Antilebanon, and Brathy, Chaos, Chemosh, Cotys, Cybele, Daena, Daevas, Dagon, Damkina, Dazimus, Derketo, Dhat-Badan, Dilmun, Dumuzi (Du'uzu), Duttur, Ea, El, Endukugga, Enki, Enlil, Ennugi, Eriskegal, Ereshkigal (Allatu), Eshara, Eshmun, Firanak, Fravashi, Gatamdug, Genea, Genos, Gestinanna, Gula, Hadad, Hannahanna, Hatti, Hea, Hiribi, The Houri, Humban, Innana, Ishkur, Ishtar, Ithm, Jamshid or Jamshyd, Jehovah, Jesus, Kabta, Kadi, Kamrusepas, Ki (Kiki), Kingu, Kolpia, Kothar-u-Khasis, Lahar, Marduk, Mari, Meni, Merodach, Misor, Moloch, Mot, Mushdama, Mylitta, Naamah, Nabu (Nebo), Nairyosangha, Nammu, Namtaru, Nanna, Nebo, Nergal, Nidaba, Ninhursag or Nintu, Ninlil, Ninsar, Nintur, Ninurta, Pa, Qadshu, Rapithwin, Resheph (Mikal or Mekal), Rimmon, Sadarnuna, Shahar, Shalim, Shamish, Shapshu, Sheger, Sin, Siris (Sirah), Taautos, Tammuz, Tanit, Taru, Tasimmet, Telipinu, Tiamat, Tishtrya, Tsehub, Utnapishtim, Utu, Wurusemu, Yam, Yarih (Yarikh), Yima, Zaba, Zababa, Zam, Zanahary (Zanaharibe), Zarpandit, Zarathustra, Zatavu, Zazavavindrano, Ziusudra, Zu (Imdugud), Zurvan