Great, all praise is due to God - then you are a Muslim (at least by Faith). What that means is that you are free of the only 'Unforgivable' sin (according to Islam) of denying God/associating partners with God, even though you won't be utilizing the true benefit of Islam/guidance from God unless you start practicing the other aspects of the faith.
As I have mentioned earlier, no one expects someone to adopt a new way of life right away from day one. If one can do that, great - if not, that's fine too. God will judge everyone according to their intention and ability. So one should eventually be willing to adopt them to avoid sinning after all that is the purpose of willfully submitting to God completely so we can gain His pleasure and compassion in this world and hereafter. Right ?
Now if you were to die today (God forbid - just so to say), you will be dying in the state of Islam. What this means is, the end result will be
EITHER at best God completely forgives your other sins(for example, doing something prohibited or not doing something mandatory) if He wills and since you believe in Him and His prophets including Muhammad(pbuh) and His judgement, that you enter paradise without hell fire ever touching you OR at worse that you get purified for your sins in Hell for some time and then eventually enter paradise. However,
if someone didn't acknowledge the One true God, they wouldn't have the option of entering paradise at all since denying God and/or associating partners with God is the only 'unforgivable sin' in Islam.
Now let me explain the issue of Homosexuality in Islam. Hopefully, this will clear things up for you. If it doesn't please feel free to ask more questions.
Homosexuality is a sin just like adultery is. And no where in the Qur'an it says that all homosexuals should be put to death. However, punishment for adultery is stoning to death just like in the mosaic law but with strict conditions attached (and that is what most people miss). You need 4 upright witnesses before the punishment will be enforced. Now, how many people do you think commit adultery in front of 4 people(even in the most liberal of societies) ? Thus, the point is to stop the influencing/encouragement of the moral decay in the society, when people are so arrogant and corrupt as to do such things in public. "The idea is not to enforce the punishment and make people suffer; rather the objective is to prevent harm, corruption and immorality in the society. Thus, legal punishments act as deterrents more than actually get people punished."
You can read more details here.
The legal penalty for fornication
Having said all that let's consider the following scenario (assuming that is the only issue that is holding you up from accepting Islam as a whole) :
On the day of judgement, 1)you see a group of people being punished for homosexuality (after all it is a sin in Islam). 2)Then, you see another group of people being punished even more severely for Killing those homosexuals unjustly. 3)Then you find Yourself being punished for not practicing Islam completely(just because you didn't like/agree with the actions of those treating the homosexuals unjustly). Would you rather witness all 3 of the above or just 1 and 2 and 3(b) which is you are rewarded for believing and practicing Islam regardless of what wrong the others commit ? The choice is yours. I would like to get your thought on this.
Once again, there are some people who misinterpret Islam - please do not let those minority be your barrier to Islam. Remember, you have taken a huge stride to come towards God, satan will try to block that path every step of the way. Do not let him win - keep praying to God for help and guidance and ultimately success in this world and the next.
Peace and feel free to ask any questions you have.
