Quite right. I think the biblical evidence proves you are wrong.
That is up for debate.
Luke 22:18 "or I say to you, I will not drink of the fruit of the vine from now on until the kingdom of God comes."
Fruit is fruit. Obviously then it is grape juice he is speaking of.
Let's lay down some principles right away.
First, context is king. The context determines the meaning of the word. Obviously a person does not get drunk on juice. That is a given.
Secondly, both in Hebrew (yayin), and in Greek (oinos), and also in older English (wine), all these words had a double meaning of either fermented wine or unfermented wine. Either meaning could be correct depending on the context.
Consider the English word "cider." I went to "Second Cup" (like Starbucks) and had a cider (hot apple drink). I passed through Germany once and saw that they also sold cider. But I refrained. That same "cider" was a fermented beverage, and since I don't drink it may have had an unwanted effect on me. It is the same word with two different meanings. So are the former words.
The "fruit of the vine" in Luke, is obviously referring to grape juice, that which comes straight from the vine.
Ruth 3:7 When Boaz had eaten and drunk and his heart was merry, he went to lie down at the end of the heap of grain; and she came secretly, and uncovered his feet and lay down.
Obviously an intoxicating beverage.
Genesis 14:18 And Melchizedek king of Salem brought out bread and wine; now he was a priest of God Most High.
It is doubtful that Abraham would have given him an alcoholic beverage.
The symbolism of fermented wine also is important to consider.
Numbers 28:14 Their drink offerings shall be half a hin of wine for a bull and a third of a hin for the ram and a fourth of a hin for a lamb; this is the burnt offering of each month throughout the months of the year.
No offering could be with leaven or yeast such as fermented wine.
Deuteronomy 7:13 He will love you and bless you and multiply you; He will also bless the fruit of your womb and the fruit of your ground, your grain and your new wine and your oil, the increase of your herd and the young of your flock, in the land which He swore to your forefathers to give you.
Generally speaking new wine is grape juice; there is no reason not to take it in that sense here.
Ecclesiastes 9:7 Go then, eat your bread in happiness and drink your wine with a cheerful heart; for God has already approved your works.
I would be wary about using any verse in Ecclesiastes as a proof text without considering the context of the entire book. Why was it written? What is the theme of the book?
Isaiah 25:6 The Lord of hosts will prepare a lavish banquet for all peoples on this mountain; A banquet of aged wine, choice pieces with marrow, And refined, aged wine.
Again, context? What is Isaiah speaking of here? What time period?
I believe he is speaking of the Millennial Kingdom. By that time we will have new and resurrected bodies. Eye has not seen; ear has not heard, etc.
And the key verse:
Ephesians 5:18 And do not get drunk with wine, for that is dissipation, but be filled with the Spirit,
The verse is an illustration. The command is to be filled with the Holy Spirit. We are to be so filled with the Spirit of God that we are to allow Him to control us as alcohol takes control of a drunk man. A drunk says things and does things that he regrets saying and doing.
A person filled with the Spirit will say things and do things (under an influence not of himself) that he will not regret but rather rejoice in.
Shall we play the game you a verse, me a verse, everyone a verse verse?
No, but I can answer your objections.