Many in today's culture believe that homosexuality is just another form of human sexual expression and that people are born that way. To them, if someone feels an attraction to someone of the same sex, then it's obviously a natural (and therefore good) inclination to be acted upon. However, this way of thinking is not in agreement with the Bible.
The Bible teaches that God created male and female to complement each other physically, emotionally, and spiritually, but sin distorted this design and led to disordered desires, including same-sex attraction (Genesis 2:18-22; Romans 1:24-27). Scripture consistently presents homosexuality in a negative context and identifies it as a deviation from God’s intent for sexuality (Leviticus 18:22; 1 Corinthians 6:9-10). While being tempted is not a sin, dwelling on or acting upon homosexual attraction or desires is sinful (James 1:14-15; Matthew 5:27-28). All people are born with sinful tendencies, but that does not make acting on those tendencies acceptable before God (Romans 5:12; Romans 3:10-12). Believers are called to resist sinful desires and walk according to the Spirit, regardless of cultural shifts or personal inclinations (Romans 8:4; Romans 3:4).
What about those who struggle against homosexual attraction? Some seem to have a natural proclivity toward homosexuality. All people have a weakness toward some type of sin. We are all born sinners, and we all exhibit tendencies toward one type of misbehavior or another. Not everyone struggles with lying, but, for some, lying seems to be second nature. The same holds true for heterosexual lust, stealing, out-of-control anger, etc. These proclivities stem from our being born in a fallen condition due to the corruption that entered the world through Adam (Romans 5:12). We are all born sinners. However, to say that sin is natural and therefore permissible simply because we are born with a weakness for it is absurd. A person with a weakness for alcohol abuse may feel that the addiction so permeates him as to be part of the very fiber of his being, but that does not make his drunkenness acceptable. A kleptomaniac feels a strong desire to steal, yet his stealing is not justified. It is the same for homosexuailty.
We live in a fallen world, and our human natures are depraved. We struggle against the world, the flesh, and the devil; confused feelings and aberrant desires are part of the mix. That more people appear to be identifying with or supporting homosexuality as normal could be a sign of a general decline in morals and lack of concern for God. This "sliding away" from God seems to get worse with passing years (see 2 Timothy 3:13). But, even if every person on earth disagreed with God on this matter or any other, it changes nothing about God's truth (Romans 3:4). God has determined the proper order in sexuality and every other aspect of life. When people oppose Him, they do so to their own peril.