Let's say that your commute is about ~30 mins each way, five days a week. Would you rather your car have no AC in the summer (average high temp between June and early September is in the mid 90s, humidity between 60%-80% daily), or no heat in the winter (average high temp between December and February is between 20-30F)? NEITHER IS NOT AN OPTION.
Are you anxious about anything? Tell Dr TQC, maybe we can help talk your nerves down (or at least commiserate).