Christ set up His church to be interdependent on one another:
For just as we have many members in one body and all the members do not have the same function, so we, who are many, are one body in Christ, and individually members one of another. Since we have gifts that differ according to the grace given to us, each of us is to exercise them accordingly: if prophecy, according to the proportion of his faith; if service, in his serving; or he who teaches, in his teaching; or he who exhorts, in his exhortation; he who gives, with liberality; he who leads, with diligence; he who shows mercy, with cheerfulness. Let love be without hypocrisy. Abhor what is evil; cling to what is good. Be devoted to one another in brotherly love; give preference to one another in honor; not lagging behind in diligence, fervent in spirit, serving the Lord; rejoicing in hope, persevering in tribulation, devoted to prayer, contributing to the needs of the saints, practicing hospitality.
(Rom 12:4-13 NASB)
You are part of the Body of Christ and therefore accountable to God and your fellow brothers and sisters in Christ. Some will call this a "Mary/Martha" situation, but it is not. Mary was sitting at the feet of Jesus while Martha put the tasks above the worship and teaching of the Word of God. I don't see that you do this - in fact just the opposite.
I'm sorry for being so blunt, but you should serve, and yes, I will tell you this because God's Word says you should use your gifts for His glory and for the building up of the church! My answer to you must be from the Word of God and you should pray about it and allow God to answer this for you.
And He gave some as apostles, and some as prophets, and some as evangelists, and some as pastors and teachers, for the equipping of the saints for the work of service, to the building up of the body of Christ; until we all attain to the unity of the faith
, and of the knowledge of the Son of God, to a mature man, to the measure of the stature which belongs to the fullness of Christ. As a result, we are no longer to be children, tossed here and there by waves and carried about by every wind of doctrine, by the trickery of men, by craftiness in deceitful scheming; but speaking the truth in love, we are to grow up in all aspects into Him who is the head, even Christ, from whom the whole body, being fitted and held together by what every joint supplies, according to the proper working of each individual part, causes the growth of the body for the building up of itself in love." (Eph 4:11-16 NASB)
So, the answer to your question is found in the Word of God. It does no good for anyone to tell you that being a pew sitter is a good thing, that it's okay. It's not. We are so afraid of offending someone by our words that we sometimes neglect to give a scriptural answer! But God says we must speak truth to one another and that doesn't mean just words of encouragement to continue in the same pattern that is neither good for us or the Body of Christ.
You have a talent. I am also an artist and do what I call "scripture paintings." Maybe you can teach the children to paint in Sunday school? Offer to make posters? How about face painting for special events? Can you write "thank you notes" or be responsible for sending birthday greetings? There are so many creative ways to serve.
You need to ask God to direct you and I would suggest that you look at what could build up the Body of Christ through your service. The question is not "should I" serve, but how.
P.S. I don't think switching churches is the answer either unless the teaching is heretical. You have been placed in this church to grow. Love the people you fellowship with.
A Pastor's Wife