You register yourself as a Baptist. May I ask what kind of Baptist you are? The reason I ask, is that your statement above does not generally reflect those in the Baptist denomination. Just curious, hope you don't mind me asking. The context of the verses you quote above has nothing to do with miracles, signs and wonders, but rather the power of the Gospel to save a lost person. If you will carefully examine the context you will see this very clearly. Paul is admitting that he was not eloquent in his speech, but denying that eloquence equals power in the salvation of souls. Just plain gospel preaching. He is taking the reader back to his opening statement in 1 Corinthians 1:17-18 where he declares the power of salvation is in the gospel, not in baptism. He develops this theme because the Corinthians were divided over personalties that baptized them. The personalities were but instruments and working for the same boss - God. The power of salvation is not in personalities, baptism or eloquence but in the the plain_n_simple gospel. That is the greatest of God's miracles - the salvation of a lost soul through faithful preaching of the plain_n_simple gospel!
What makes you think that apostolic signs and wonders are present today? Paul says they are the "signs of an apostle" (2 Cor. 12:12). Do you believe there are apostles today? Or do you believe they were foundational (Eph. 2;20) and thus temporary gifts? Do you believe the Scriptures are the finished revelation of God and final authority for faith and practice or do you believe in ongoing revelation?