I suppose, there is a legalism of sorts promoted by many, and that just sits uncomfortable with me. It's like when Peter associated with gentiles, and then because they weren't circumcised and ate "unclean" foods and the like, he became hypocrital when his Jewish brethren were around. Paul confronted him on it (i.e., Galatians 2).
Consider also Peter's vision in Acts 10:
It contained all kinds of four-footed animals, as well as reptiles and birds. 13 Then a voice told him, “Get up, Peter. Kill and eat.”
14 “Surely not, Lord!” Peter replied. “I have never eaten anything impure or unclean.”
15 The voice spoke to him a second time, “Do not call anything impure that God has made clean.”
And then, Colossians 2:16-17 which reads:
16 Therefore let no one pass judgment on you in questions of food and drink, or with regard to a festival or a new moon or a Sabbath. 17 These are a shadow of the things to come, but the substance belongs to Christ.
Also, Galatians 5 where Paul has rather harsh words for those trying to place Christians under the yoke of law, in particular circumcision, making us fall from the security of grace via faith in Christ and Him alone:
2 Look: I, Paul, say to you that if you accept circumcision, Christ will be of no advantage to you. 3 I testify again to every man who accepts circumcision that he is obligated to keep the whole law. 4 You are severed from Christ, you who would be justified[a] by the law; you have fallen away from grace. 5 For through the Spirit, by faith, we ourselves eagerly wait for the hope of righteousness. 6 For in Christ Jesus neither circumcision nor uncircumcision counts for anything, but only faith working through love.
7 You were running well. Who hindered you from obeying the truth? 8 This persuasion is not from him who calls you. 9 A little leaven leavens the whole lump. 10 I have confidence in the Lord that you will take no other view, and the one who is troubling you will bear the penalty, whoever he is. 11 But if I, brothers, still preach[c] circumcision, why am I still being persecuted? In that case the offense of the cross has been removed. 12 I wish those who unsettle you would emasculate themselves!
You've stated that you eat meat, fine, many of your brothers and sisters do not and I expect would judge you for such. Then we could discuss days and the Sabbath, but that's gotten us nowhere in the past, yet Colossians 2:16 says to not let others pass judgement on you for such. As for wine, most certainly not grape juice Jesus turned the water into -- and yet that is what is advocated as though drinking alcohol is a sin rather than merely a health choice like you're here advancing.
Now, you cite health reasons. That might be well and good, but having had bible studies with an SDA, there is clearly an advocacy of a works-based theology which is just so antithetical to the good news of Christ. I don't consider SDA as JWs or Mormans, clearly, at least much Christian doctrine is correct with regard to the nature of God and like. There is much right and to be celebrated I suppose in what we would agree upon. One also doesn't have to be SDA to be caught up in a wrong works-based theology that even extends unto security in salvation.
Let me say here a few statements, ones I'm not so sure you'd support without a bit of qualification (which highlights a main difference between our theologies and even soteriologies). The law - the Law - is dead and when we come to Christ we're no longer captive to it. It is no longer binding upon us – we are free from any written law in the Scriptures/OT. All thanks to Christ, His work, and our trust in Christ. We are righteous not via works, but such is imputed to us by faith. Thus, even though I fall and sin, and fail to keep the law in many ways, I'm nonetheless righteous and will be declared such thanks to m'Lord Christ Jesus.
How many SDAs would have just squirmed to some of those statements I just made? Those that are still in some way bound to the law, and feel like they're under the law like Israel were. Such don't fully understand the new convenant, which is of the heart which was prophecied by Jeremiah (Jer 31:31-34) to the Jewish peoples. Such I'd say don't truly understand grace and the gospel of Christ, and indeed I don't understand how such could feel secure at all in Christ.
Now you have SDA beliefs and understand their theology better than I. I certainly don't claim to be more knowledgable than you in that respect. So correct me if I'm wrong that I wouldn't be judged here by many SDAs, particularly my words regarding the law.